2815960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 7387200

約数和(自身を除く): 4571240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 113, 140, 178, 226, 280, 356, 445, 452, 565, 623, 712, 791, 890, 904, 1130, 1246, 1582, 1780, 2260, 2492, 3115, 3164, 3560, 3955, 4520, 4984, 6230, 6328, 7910, 10057, 12460, 15820, 20114, 24920, 31640, 40228, 50285, 70399, 80456, 100570, 140798, 201140, 281596, 351995, 402280, 563192, 703990, 1407980, 2815960]

約数ペア:

[(1, 2815960), (2, 1407980), (4, 703990), (5, 563192), (7, 402280), (8, 351995), (10, 281596), (14, 201140), (20, 140798), (28, 100570), (35, 80456), (40, 70399), (56, 50285), (70, 40228), (89, 31640), (113, 24920), (140, 20114), (178, 15820), (226, 12460), (280, 10057), (356, 7910), (445, 6328), (452, 6230), (565, 4984), (623, 4520), (712, 3955), (791, 3560), (890, 3164), (904, 3115), (1130, 2492), (1246, 2260), (1582, 1780)]