28406040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:297

約数の個数: 128

約数和(自身を含む): 93139200

約数和(自身を除く): 64733160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 131, 139, 156, 195, 260, 262, 278, 312, 390, 393, 417, 520, 524, 556, 655, 695, 780, 786, 834, 1048, 1112, 1310, 1390, 1560, 1572, 1668, 1703, 1807, 1965, 2085, 2620, 2780, 3144, 3336, 3406, 3614, 3930, 4170, 5109, 5240, 5421, 5560, 6812, 7228, 7860, 8340, 8515, 9035, 10218, 10842, 13624, 14456, 15720, 16680, 17030, 18070, 18209, 20436, 21684, 25545, 27105, 34060, 36140, 36418, 40872, 43368, 51090, 54210, 54627, 68120, 72280, 72836, 91045, 102180, 108420, 109254, 145672, 182090, 204360, 216840, 218508, 236717, 273135, 364180, 437016, 473434, 546270, 710151, 728360, 946868, 1092540, 1183585, 1420302, 1893736, 2185080, 2367170, 2840604, 3550755, 4734340, 5681208, 7101510, 9468680, 14203020, 28406040]

約数ペア:

[(1, 28406040), (2, 14203020), (3, 9468680), (4, 7101510), (5, 5681208), (6, 4734340), (8, 3550755), (10, 2840604), (12, 2367170), (13, 2185080), (15, 1893736), (20, 1420302), (24, 1183585), (26, 1092540), (30, 946868), (39, 728360), (40, 710151), (52, 546270), (60, 473434), (65, 437016), (78, 364180), (104, 273135), (120, 236717), (130, 218508), (131, 216840), (139, 204360), (156, 182090), (195, 145672), (260, 109254), (262, 108420), (278, 102180), (312, 91045), (390, 72836), (393, 72280), (417, 68120), (520, 54627), (524, 54210), (556, 51090), (655, 43368), (695, 40872), (780, 36418), (786, 36140), (834, 34060), (1048, 27105), (1112, 25545), (1310, 21684), (1390, 20436), (1560, 18209), (1572, 18070), (1668, 17030), (1703, 16680), (1807, 15720), (1965, 14456), (2085, 13624), (2620, 10842), (2780, 10218), (3144, 9035), (3336, 8515), (3406, 8340), (3614, 7860), (3930, 7228), (4170, 6812), (5109, 5560), (5240, 5421)]