68747980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:152

約数の個数: 144

約数和(自身を含む): 180986400

約数和(自身を除く): 112238420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 41, 49, 58, 59, 70, 82, 98, 116, 118, 140, 145, 164, 196, 203, 205, 236, 245, 287, 290, 295, 406, 410, 413, 490, 574, 580, 590, 812, 820, 826, 980, 1015, 1148, 1180, 1189, 1421, 1435, 1652, 1711, 2009, 2030, 2065, 2378, 2419, 2842, 2870, 2891, 3422, 4018, 4060, 4130, 4756, 4838, 5684, 5740, 5782, 5945, 6844, 7105, 8036, 8260, 8323, 8555, 9676, 10045, 11564, 11890, 11977, 12095, 14210, 14455, 16646, 16933, 17110, 20090, 23780, 23954, 24190, 28420, 28910, 33292, 33866, 34220, 40180, 41615, 47908, 48380, 57820, 58261, 59885, 67732, 70151, 83230, 83839, 84665, 116522, 118531, 119770, 140302, 166460, 167678, 169330, 233044, 237062, 239540, 280604, 291305, 335356, 338660, 350755, 419195, 474124, 491057, 582610, 592655, 701510, 838390, 982114, 1165220, 1185310, 1403020, 1676780, 1964228, 2370620, 2455285, 3437399, 4910570, 6874798, 9821140, 13749596, 17186995, 34373990, 68747980]

約数ペア:

[(1, 68747980), (2, 34373990), (4, 17186995), (5, 13749596), (7, 9821140), (10, 6874798), (14, 4910570), (20, 3437399), (28, 2455285), (29, 2370620), (35, 1964228), (41, 1676780), (49, 1403020), (58, 1185310), (59, 1165220), (70, 982114), (82, 838390), (98, 701510), (116, 592655), (118, 582610), (140, 491057), (145, 474124), (164, 419195), (196, 350755), (203, 338660), (205, 335356), (236, 291305), (245, 280604), (287, 239540), (290, 237062), (295, 233044), (406, 169330), (410, 167678), (413, 166460), (490, 140302), (574, 119770), (580, 118531), (590, 116522), (812, 84665), (820, 83839), (826, 83230), (980, 70151), (1015, 67732), (1148, 59885), (1180, 58261), (1189, 57820), (1421, 48380), (1435, 47908), (1652, 41615), (1711, 40180), (2009, 34220), (2030, 33866), (2065, 33292), (2378, 28910), (2419, 28420), (2842, 24190), (2870, 23954), (2891, 23780), (3422, 20090), (4018, 17110), (4060, 16933), (4130, 16646), (4756, 14455), (4838, 14210), (5684, 12095), (5740, 11977), (5782, 11890), (5945, 11564), (6844, 10045), (7105, 9676), (8036, 8555), (8260, 8323)]