28567980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:149

約数の個数: 216

約数和(自身を含む): 104569920

約数和(自身を除く): 76001940

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 41, 42, 45, 49, 60, 63, 70, 79, 82, 84, 90, 98, 105, 123, 126, 140, 147, 158, 164, 180, 196, 205, 210, 237, 245, 246, 252, 287, 294, 315, 316, 369, 395, 410, 420, 441, 474, 490, 492, 553, 574, 588, 615, 630, 711, 735, 738, 790, 820, 861, 882, 948, 980, 1106, 1148, 1185, 1230, 1260, 1422, 1435, 1470, 1476, 1580, 1659, 1722, 1764, 1845, 2009, 2205, 2212, 2370, 2460, 2583, 2765, 2844, 2870, 2940, 3239, 3318, 3444, 3555, 3690, 3871, 4018, 4305, 4410, 4740, 4977, 5166, 5530, 5740, 6027, 6478, 6636, 7110, 7380, 7742, 8036, 8295, 8610, 8820, 9717, 9954, 10045, 10332, 11060, 11613, 12054, 12915, 12956, 14220, 15484, 16195, 16590, 17220, 18081, 19355, 19434, 19908, 20090, 22673, 23226, 24108, 24885, 25830, 29151, 30135, 32390, 33180, 34839, 36162, 38710, 38868, 40180, 45346, 46452, 48585, 49770, 51660, 58065, 58302, 60270, 64780, 68019, 69678, 72324, 77420, 90405, 90692, 97170, 99540, 113365, 116130, 116604, 120540, 136038, 139356, 145755, 158711, 174195, 180810, 194340, 204057, 226730, 232260, 272076, 291510, 317422, 340095, 348390, 361620, 408114, 453460, 476133, 583020, 634844, 680190, 696780, 793555, 816228, 952266, 1020285, 1360380, 1428399, 1587110, 1904532, 2040570, 2380665, 2856798, 3174220, 4081140, 4761330, 5713596, 7141995, 9522660, 14283990, 28567980]

約数ペア:

[(1, 28567980), (2, 14283990), (3, 9522660), (4, 7141995), (5, 5713596), (6, 4761330), (7, 4081140), (9, 3174220), (10, 2856798), (12, 2380665), (14, 2040570), (15, 1904532), (18, 1587110), (20, 1428399), (21, 1360380), (28, 1020285), (30, 952266), (35, 816228), (36, 793555), (41, 696780), (42, 680190), (45, 634844), (49, 583020), (60, 476133), (63, 453460), (70, 408114), (79, 361620), (82, 348390), (84, 340095), (90, 317422), (98, 291510), (105, 272076), (123, 232260), (126, 226730), (140, 204057), (147, 194340), (158, 180810), (164, 174195), (180, 158711), (196, 145755), (205, 139356), (210, 136038), (237, 120540), (245, 116604), (246, 116130), (252, 113365), (287, 99540), (294, 97170), (315, 90692), (316, 90405), (369, 77420), (395, 72324), (410, 69678), (420, 68019), (441, 64780), (474, 60270), (490, 58302), (492, 58065), (553, 51660), (574, 49770), (588, 48585), (615, 46452), (630, 45346), (711, 40180), (735, 38868), (738, 38710), (790, 36162), (820, 34839), (861, 33180), (882, 32390), (948, 30135), (980, 29151), (1106, 25830), (1148, 24885), (1185, 24108), (1230, 23226), (1260, 22673), (1422, 20090), (1435, 19908), (1470, 19434), (1476, 19355), (1580, 18081), (1659, 17220), (1722, 16590), (1764, 16195), (1845, 15484), (2009, 14220), (2205, 12956), (2212, 12915), (2370, 12054), (2460, 11613), (2583, 11060), (2765, 10332), (2844, 10045), (2870, 9954), (2940, 9717), (3239, 8820), (3318, 8610), (3444, 8295), (3555, 8036), (3690, 7742), (3871, 7380), (4018, 7110), (4305, 6636), (4410, 6478), (4740, 6027), (4977, 5740), (5166, 5530)]