21040630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 23085578

約数列:

[1, 2, 5, 10, 13, 23, 26, 31, 46, 62, 65, 115, 130, 155, 227, 230, 299, 310, 403, 454, 598, 713, 806, 1135, 1426, 1495, 2015, 2270, 2951, 2990, 3565, 4030, 5221, 5902, 7037, 7130, 9269, 10442, 14074, 14755, 18538, 26105, 29510, 35185, 46345, 52210, 67873, 70370, 91481, 92690, 135746, 161851, 182962, 323702, 339365, 457405, 678730, 809255, 914810, 1618510, 2104063, 4208126, 10520315, 21040630]

約数ペア:

[(1, 21040630), (2, 10520315), (5, 4208126), (10, 2104063), (13, 1618510), (23, 914810), (26, 809255), (31, 678730), (46, 457405), (62, 339365), (65, 323702), (115, 182962), (130, 161851), (155, 135746), (227, 92690), (230, 91481), (299, 70370), (310, 67873), (403, 52210), (454, 46345), (598, 35185), (713, 29510), (806, 26105), (1135, 18538), (1426, 14755), (1495, 14074), (2015, 10442), (2270, 9269), (2951, 7130), (2990, 7037), (3565, 5902), (4030, 5221)]