71213720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:476

約数の個数: 64

約数和(自身を含む): 165745440

約数和(自身を除く): 94531720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 173, 205, 251, 328, 346, 410, 502, 692, 820, 865, 1004, 1255, 1384, 1640, 1730, 2008, 2510, 3460, 5020, 6920, 7093, 10040, 10291, 14186, 20582, 28372, 35465, 41164, 43423, 51455, 56744, 70930, 82328, 86846, 102910, 141860, 173692, 205820, 217115, 283720, 347384, 411640, 434230, 868460, 1736920, 1780343, 3560686, 7121372, 8901715, 14242744, 17803430, 35606860, 71213720]

約数ペア:

[(1, 71213720), (2, 35606860), (4, 17803430), (5, 14242744), (8, 8901715), (10, 7121372), (20, 3560686), (40, 1780343), (41, 1736920), (82, 868460), (164, 434230), (173, 411640), (205, 347384), (251, 283720), (328, 217115), (346, 205820), (410, 173692), (502, 141860), (692, 102910), (820, 86846), (865, 82328), (1004, 70930), (1255, 56744), (1384, 51455), (1640, 43423), (1730, 41164), (2008, 35465), (2510, 28372), (3460, 20582), (5020, 14186), (6920, 10291), (7093, 10040)]