19436840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{571}}^1$

素因数の和:642

約数の個数: 64

約数和(自身を含む): 46949760

約数和(自身を除く): 27512920

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 571, 740, 851, 920, 1142, 1480, 1702, 2284, 2855, 3404, 4255, 4568, 5710, 6808, 8510, 11420, 13133, 17020, 21127, 22840, 26266, 34040, 42254, 52532, 65665, 84508, 105064, 105635, 131330, 169016, 211270, 262660, 422540, 485921, 525320, 845080, 971842, 1943684, 2429605, 3887368, 4859210, 9718420, 19436840]

約数ペア:

[(1, 19436840), (2, 9718420), (4, 4859210), (5, 3887368), (8, 2429605), (10, 1943684), (20, 971842), (23, 845080), (37, 525320), (40, 485921), (46, 422540), (74, 262660), (92, 211270), (115, 169016), (148, 131330), (184, 105635), (185, 105064), (230, 84508), (296, 65665), (370, 52532), (460, 42254), (571, 34040), (740, 26266), (851, 22840), (920, 21127), (1142, 17020), (1480, 13133), (1702, 11420), (2284, 8510), (2855, 6808), (3404, 5710), (4255, 4568)]