20543140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 49641984

約数和(自身を除く): 29098844

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 37, 46, 68, 71, 74, 85, 92, 115, 142, 148, 170, 185, 230, 284, 340, 355, 370, 391, 460, 629, 710, 740, 782, 851, 1207, 1258, 1420, 1564, 1633, 1702, 1955, 2414, 2516, 2627, 3145, 3266, 3404, 3910, 4255, 4828, 5254, 6035, 6290, 6532, 7820, 8165, 8510, 10508, 12070, 12580, 13135, 14467, 16330, 17020, 24140, 26270, 27761, 28934, 32660, 44659, 52540, 55522, 57868, 60421, 72335, 89318, 111044, 120842, 138805, 144670, 178636, 223295, 241684, 277610, 289340, 302105, 446590, 555220, 604210, 893180, 1027157, 1208420, 2054314, 4108628, 5135785, 10271570, 20543140]

約数ペア:

[(1, 20543140), (2, 10271570), (4, 5135785), (5, 4108628), (10, 2054314), (17, 1208420), (20, 1027157), (23, 893180), (34, 604210), (37, 555220), (46, 446590), (68, 302105), (71, 289340), (74, 277610), (85, 241684), (92, 223295), (115, 178636), (142, 144670), (148, 138805), (170, 120842), (185, 111044), (230, 89318), (284, 72335), (340, 60421), (355, 57868), (370, 55522), (391, 52540), (460, 44659), (629, 32660), (710, 28934), (740, 27761), (782, 26270), (851, 24140), (1207, 17020), (1258, 16330), (1420, 14467), (1564, 13135), (1633, 12580), (1702, 12070), (1955, 10508), (2414, 8510), (2516, 8165), (2627, 7820), (3145, 6532), (3266, 6290), (3404, 6035), (3910, 5254), (4255, 4828)]