19998480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{809}}^1$

素因数の和:928

約数の個数: 80

約数和(自身を含む): 62674560

約数和(自身を除く): 42676080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 103, 120, 206, 240, 309, 412, 515, 618, 809, 824, 1030, 1236, 1545, 1618, 1648, 2060, 2427, 2472, 3090, 3236, 4045, 4120, 4854, 4944, 6180, 6472, 8090, 8240, 9708, 12135, 12360, 12944, 16180, 19416, 24270, 24720, 32360, 38832, 48540, 64720, 83327, 97080, 166654, 194160, 249981, 333308, 416635, 499962, 666616, 833270, 999924, 1249905, 1333232, 1666540, 1999848, 2499810, 3333080, 3999696, 4999620, 6666160, 9999240, 19998480]

約数ペア:

[(1, 19998480), (2, 9999240), (3, 6666160), (4, 4999620), (5, 3999696), (6, 3333080), (8, 2499810), (10, 1999848), (12, 1666540), (15, 1333232), (16, 1249905), (20, 999924), (24, 833270), (30, 666616), (40, 499962), (48, 416635), (60, 333308), (80, 249981), (103, 194160), (120, 166654), (206, 97080), (240, 83327), (309, 64720), (412, 48540), (515, 38832), (618, 32360), (809, 24720), (824, 24270), (1030, 19416), (1236, 16180), (1545, 12944), (1618, 12360), (1648, 12135), (2060, 9708), (2427, 8240), (2472, 8090), (3090, 6472), (3236, 6180), (4045, 4944), (4120, 4854)]