31708040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:343

約数の個数: 128

約数和(自身を含む): 90961920

約数和(自身を除く): 59253880

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 91, 104, 124, 130, 140, 155, 182, 217, 248, 260, 280, 281, 310, 364, 403, 434, 455, 520, 562, 620, 728, 806, 868, 910, 1085, 1124, 1240, 1405, 1612, 1736, 1820, 1967, 2015, 2170, 2248, 2810, 2821, 3224, 3640, 3653, 3934, 4030, 4340, 5620, 5642, 7306, 7868, 8060, 8680, 8711, 9835, 11240, 11284, 14105, 14612, 15736, 16120, 17422, 18265, 19670, 22568, 25571, 28210, 29224, 34844, 36530, 39340, 43555, 51142, 56420, 60977, 69688, 73060, 78680, 87110, 102284, 112840, 113243, 121954, 127855, 146120, 174220, 204568, 226486, 243908, 255710, 304885, 348440, 452972, 487816, 511420, 566215, 609770, 792701, 905944, 1022840, 1132430, 1219540, 1585402, 2264860, 2439080, 3170804, 3963505, 4529720, 6341608, 7927010, 15854020, 31708040]

約数ペア:

[(1, 31708040), (2, 15854020), (4, 7927010), (5, 6341608), (7, 4529720), (8, 3963505), (10, 3170804), (13, 2439080), (14, 2264860), (20, 1585402), (26, 1219540), (28, 1132430), (31, 1022840), (35, 905944), (40, 792701), (52, 609770), (56, 566215), (62, 511420), (65, 487816), (70, 452972), (91, 348440), (104, 304885), (124, 255710), (130, 243908), (140, 226486), (155, 204568), (182, 174220), (217, 146120), (248, 127855), (260, 121954), (280, 113243), (281, 112840), (310, 102284), (364, 87110), (403, 78680), (434, 73060), (455, 69688), (520, 60977), (562, 56420), (620, 51142), (728, 43555), (806, 39340), (868, 36530), (910, 34844), (1085, 29224), (1124, 28210), (1240, 25571), (1405, 22568), (1612, 19670), (1736, 18265), (1820, 17422), (1967, 16120), (2015, 15736), (2170, 14612), (2248, 14105), (2810, 11284), (2821, 11240), (3224, 9835), (3640, 8711), (3653, 8680), (3934, 8060), (4030, 7868), (4340, 7306), (5620, 5642)]