81014920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{3251}}^1$

素因数の和:3358

約数の個数: 64

約数和(自身を含む): 210729600

約数和(自身を除く): 129714680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1780, 2492, 3115, 3251, 3560, 4984, 6230, 6502, 12460, 13004, 16255, 22757, 24920, 26008, 32510, 45514, 65020, 91028, 113785, 130040, 182056, 227570, 289339, 455140, 578678, 910280, 1157356, 1446695, 2025373, 2314712, 2893390, 4050746, 5786780, 8101492, 10126865, 11573560, 16202984, 20253730, 40507460, 81014920]

約数ペア:

[(1, 81014920), (2, 40507460), (4, 20253730), (5, 16202984), (7, 11573560), (8, 10126865), (10, 8101492), (14, 5786780), (20, 4050746), (28, 2893390), (35, 2314712), (40, 2025373), (56, 1446695), (70, 1157356), (89, 910280), (140, 578678), (178, 455140), (280, 289339), (356, 227570), (445, 182056), (623, 130040), (712, 113785), (890, 91028), (1246, 65020), (1780, 45514), (2492, 32510), (3115, 26008), (3251, 24920), (3560, 22757), (4984, 16255), (6230, 13004), (6502, 12460)]