320264720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1451}}^1$

素因数の和:1584

約数の個数: 80

約数和(自身を含む): 777807360

約数和(自身を除く): 457542640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 155, 178, 248, 310, 356, 445, 496, 620, 712, 890, 1240, 1424, 1451, 1780, 2480, 2759, 2902, 3560, 5518, 5804, 7120, 7255, 11036, 11608, 13795, 14510, 22072, 23216, 27590, 29020, 44144, 44981, 55180, 58040, 89962, 110360, 116080, 129139, 179924, 220720, 224905, 258278, 359848, 449810, 516556, 645695, 719696, 899620, 1033112, 1291390, 1799240, 2066224, 2582780, 3598480, 4003309, 5165560, 8006618, 10331120, 16013236, 20016545, 32026472, 40033090, 64052944, 80066180, 160132360, 320264720]

約数ペア:

[(1, 320264720), (2, 160132360), (4, 80066180), (5, 64052944), (8, 40033090), (10, 32026472), (16, 20016545), (20, 16013236), (31, 10331120), (40, 8006618), (62, 5165560), (80, 4003309), (89, 3598480), (124, 2582780), (155, 2066224), (178, 1799240), (248, 1291390), (310, 1033112), (356, 899620), (445, 719696), (496, 645695), (620, 516556), (712, 449810), (890, 359848), (1240, 258278), (1424, 224905), (1451, 220720), (1780, 179924), (2480, 129139), (2759, 116080), (2902, 110360), (3560, 89962), (5518, 58040), (5804, 55180), (7120, 44981), (7255, 44144), (11036, 29020), (11608, 27590), (13795, 23216), (14510, 22072)]