21721080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5839}}^1$

素因数の和:5884

約数の個数: 64

約数和(自身を含む): 67276800

約数和(自身を除く): 45555720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5839, 11678, 17517, 23356, 29195, 35034, 46712, 58390, 70068, 87585, 116780, 140136, 175170, 181009, 233560, 350340, 362018, 543027, 700680, 724036, 905045, 1086054, 1448072, 1810090, 2172108, 2715135, 3620180, 4344216, 5430270, 7240360, 10860540, 21721080]

約数ペア:

[(1, 21721080), (2, 10860540), (3, 7240360), (4, 5430270), (5, 4344216), (6, 3620180), (8, 2715135), (10, 2172108), (12, 1810090), (15, 1448072), (20, 1086054), (24, 905045), (30, 724036), (31, 700680), (40, 543027), (60, 362018), (62, 350340), (93, 233560), (120, 181009), (124, 175170), (155, 140136), (186, 116780), (248, 87585), (310, 70068), (372, 58390), (465, 46712), (620, 35034), (744, 29195), (930, 23356), (1240, 17517), (1860, 11678), (3720, 5839)]