18937360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:296

約数の個数: 80

約数和(自身を含む): 48121920

約数和(自身を除く): 29184560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 131, 139, 208, 260, 262, 278, 520, 524, 556, 655, 695, 1040, 1048, 1112, 1310, 1390, 1703, 1807, 2096, 2224, 2620, 2780, 3406, 3614, 5240, 5560, 6812, 7228, 8515, 9035, 10480, 11120, 13624, 14456, 17030, 18070, 18209, 27248, 28912, 34060, 36140, 36418, 68120, 72280, 72836, 91045, 136240, 144560, 145672, 182090, 236717, 291344, 364180, 473434, 728360, 946868, 1183585, 1456720, 1893736, 2367170, 3787472, 4734340, 9468680, 18937360]

約数ペア:

[(1, 18937360), (2, 9468680), (4, 4734340), (5, 3787472), (8, 2367170), (10, 1893736), (13, 1456720), (16, 1183585), (20, 946868), (26, 728360), (40, 473434), (52, 364180), (65, 291344), (80, 236717), (104, 182090), (130, 145672), (131, 144560), (139, 136240), (208, 91045), (260, 72836), (262, 72280), (278, 68120), (520, 36418), (524, 36140), (556, 34060), (655, 28912), (695, 27248), (1040, 18209), (1048, 18070), (1112, 17030), (1310, 14456), (1390, 13624), (1703, 11120), (1807, 10480), (2096, 9035), (2224, 8515), (2620, 7228), (2780, 6812), (3406, 5560), (3614, 5240)]