4008920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 9642240

約数和(自身を除く): 5633320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 53, 61, 62, 106, 122, 124, 155, 212, 244, 248, 265, 305, 310, 424, 488, 530, 610, 620, 1060, 1220, 1240, 1643, 1891, 2120, 2440, 3233, 3286, 3782, 6466, 6572, 7564, 8215, 9455, 12932, 13144, 15128, 16165, 16430, 18910, 25864, 32330, 32860, 37820, 64660, 65720, 75640, 100223, 129320, 200446, 400892, 501115, 801784, 1002230, 2004460, 4008920]

約数ペア:

[(1, 4008920), (2, 2004460), (4, 1002230), (5, 801784), (8, 501115), (10, 400892), (20, 200446), (31, 129320), (40, 100223), (53, 75640), (61, 65720), (62, 64660), (106, 37820), (122, 32860), (124, 32330), (155, 25864), (212, 18910), (244, 16430), (248, 16165), (265, 15128), (305, 13144), (310, 12932), (424, 9455), (488, 8215), (530, 7564), (610, 6572), (620, 6466), (1060, 3782), (1220, 3286), (1240, 3233), (1643, 2440), (1891, 2120)]