21335580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:129

約数の個数: 216

約数和(自身を含む): 78427440

約数和(自身を除く): 57091860

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, 59, 60, 63, 70, 82, 84, 90, 98, 105, 118, 123, 126, 140, 147, 164, 177, 180, 196, 205, 210, 236, 245, 246, 252, 287, 294, 295, 315, 354, 369, 410, 413, 420, 441, 490, 492, 531, 574, 588, 590, 615, 630, 708, 735, 738, 820, 826, 861, 882, 885, 980, 1062, 1148, 1180, 1230, 1239, 1260, 1435, 1470, 1476, 1652, 1722, 1764, 1770, 1845, 2009, 2065, 2124, 2205, 2419, 2460, 2478, 2583, 2655, 2870, 2891, 2940, 3444, 3540, 3690, 3717, 4018, 4130, 4305, 4410, 4838, 4956, 5166, 5310, 5740, 5782, 6027, 6195, 7257, 7380, 7434, 8036, 8260, 8610, 8673, 8820, 9676, 10045, 10332, 10620, 11564, 12054, 12095, 12390, 12915, 14455, 14514, 14868, 16933, 17220, 17346, 18081, 18585, 20090, 21771, 24108, 24190, 24780, 25830, 26019, 28910, 29028, 30135, 33866, 34692, 36162, 36285, 37170, 40180, 43365, 43542, 48380, 50799, 51660, 52038, 57820, 60270, 67732, 72324, 72570, 74340, 84665, 86730, 87084, 90405, 101598, 104076, 108855, 118531, 120540, 130095, 145140, 152397, 169330, 173460, 180810, 203196, 217710, 237062, 253995, 260190, 304794, 338660, 355593, 361620, 435420, 474124, 507990, 520380, 592655, 609588, 711186, 761985, 1015980, 1066779, 1185310, 1422372, 1523970, 1777965, 2133558, 2370620, 3047940, 3555930, 4267116, 5333895, 7111860, 10667790, 21335580]

約数ペア:

[(1, 21335580), (2, 10667790), (3, 7111860), (4, 5333895), (5, 4267116), (6, 3555930), (7, 3047940), (9, 2370620), (10, 2133558), (12, 1777965), (14, 1523970), (15, 1422372), (18, 1185310), (20, 1066779), (21, 1015980), (28, 761985), (30, 711186), (35, 609588), (36, 592655), (41, 520380), (42, 507990), (45, 474124), (49, 435420), (59, 361620), (60, 355593), (63, 338660), (70, 304794), (82, 260190), (84, 253995), (90, 237062), (98, 217710), (105, 203196), (118, 180810), (123, 173460), (126, 169330), (140, 152397), (147, 145140), (164, 130095), (177, 120540), (180, 118531), (196, 108855), (205, 104076), (210, 101598), (236, 90405), (245, 87084), (246, 86730), (252, 84665), (287, 74340), (294, 72570), (295, 72324), (315, 67732), (354, 60270), (369, 57820), (410, 52038), (413, 51660), (420, 50799), (441, 48380), (490, 43542), (492, 43365), (531, 40180), (574, 37170), (588, 36285), (590, 36162), (615, 34692), (630, 33866), (708, 30135), (735, 29028), (738, 28910), (820, 26019), (826, 25830), (861, 24780), (882, 24190), (885, 24108), (980, 21771), (1062, 20090), (1148, 18585), (1180, 18081), (1230, 17346), (1239, 17220), (1260, 16933), (1435, 14868), (1470, 14514), (1476, 14455), (1652, 12915), (1722, 12390), (1764, 12095), (1770, 12054), (1845, 11564), (2009, 10620), (2065, 10332), (2124, 10045), (2205, 9676), (2419, 8820), (2460, 8673), (2478, 8610), (2583, 8260), (2655, 8036), (2870, 7434), (2891, 7380), (2940, 7257), (3444, 6195), (3540, 6027), (3690, 5782), (3717, 5740), (4018, 5310), (4130, 5166), (4305, 4956), (4410, 4838)]