81421780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{6983}}^1$

素因数の和:7056

約数の個数: 48

約数和(自身を含む): 190076544

約数和(自身を除く): 108654764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 53, 55, 106, 110, 212, 220, 265, 530, 583, 1060, 1166, 2332, 2915, 5830, 6983, 11660, 13966, 27932, 34915, 69830, 76813, 139660, 153626, 307252, 370099, 384065, 740198, 768130, 1480396, 1536260, 1850495, 3700990, 4071089, 7401980, 8142178, 16284356, 20355445, 40710890, 81421780]

約数ペア:

[(1, 81421780), (2, 40710890), (4, 20355445), (5, 16284356), (10, 8142178), (11, 7401980), (20, 4071089), (22, 3700990), (44, 1850495), (53, 1536260), (55, 1480396), (106, 768130), (110, 740198), (212, 384065), (220, 370099), (265, 307252), (530, 153626), (583, 139660), (1060, 76813), (1166, 69830), (2332, 34915), (2915, 27932), (5830, 13966), (6983, 11660)]