8427640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{853}}^1$

素因数の和:896

約数の個数: 64

約数和(自身を含む): 21520800

約数和(自身を除く): 13093160

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 853, 988, 1235, 1706, 1976, 2470, 3412, 4265, 4940, 6824, 8530, 9880, 11089, 16207, 17060, 22178, 32414, 34120, 44356, 55445, 64828, 81035, 88712, 110890, 129656, 162070, 210691, 221780, 324140, 421382, 443560, 648280, 842764, 1053455, 1685528, 2106910, 4213820, 8427640]

約数ペア:

[(1, 8427640), (2, 4213820), (4, 2106910), (5, 1685528), (8, 1053455), (10, 842764), (13, 648280), (19, 443560), (20, 421382), (26, 324140), (38, 221780), (40, 210691), (52, 162070), (65, 129656), (76, 110890), (95, 88712), (104, 81035), (130, 64828), (152, 55445), (190, 44356), (247, 34120), (260, 32414), (380, 22178), (494, 17060), (520, 16207), (760, 11089), (853, 9880), (988, 8530), (1235, 6824), (1706, 4940), (1976, 4265), (2470, 3412)]