815558920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{25391}}^1$

素因数の和:25486

約数の個数: 64

約数和(自身を含む): 2029328640

約数和(自身を除く): 1213769720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 730, 803, 1460, 1606, 2920, 3212, 4015, 6424, 8030, 16060, 25391, 32120, 50782, 101564, 126955, 203128, 253910, 279301, 507820, 558602, 1015640, 1117204, 1396505, 1853543, 2234408, 2793010, 3707086, 5586020, 7414172, 9267715, 11172040, 14828344, 18535430, 20388973, 37070860, 40777946, 74141720, 81555892, 101944865, 163111784, 203889730, 407779460, 815558920]

約数ペア:

[(1, 815558920), (2, 407779460), (4, 203889730), (5, 163111784), (8, 101944865), (10, 81555892), (11, 74141720), (20, 40777946), (22, 37070860), (40, 20388973), (44, 18535430), (55, 14828344), (73, 11172040), (88, 9267715), (110, 7414172), (146, 5586020), (220, 3707086), (292, 2793010), (365, 2234408), (440, 1853543), (584, 1396505), (730, 1117204), (803, 1015640), (1460, 558602), (1606, 507820), (2920, 279301), (3212, 253910), (4015, 203128), (6424, 126955), (8030, 101564), (16060, 50782), (25391, 32120)]