20499720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1229}}^1$

素因数の和:1382

約数の個数: 64

約数和(自身を含む): 61992000

約数和(自身を除く): 41492280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 139, 278, 417, 556, 695, 834, 1112, 1229, 1390, 1668, 2085, 2458, 2780, 3336, 3687, 4170, 4916, 5560, 6145, 7374, 8340, 9832, 12290, 14748, 16680, 18435, 24580, 29496, 36870, 49160, 73740, 147480, 170831, 341662, 512493, 683324, 854155, 1024986, 1366648, 1708310, 2049972, 2562465, 3416620, 4099944, 5124930, 6833240, 10249860, 20499720]

約数ペア:

[(1, 20499720), (2, 10249860), (3, 6833240), (4, 5124930), (5, 4099944), (6, 3416620), (8, 2562465), (10, 2049972), (12, 1708310), (15, 1366648), (20, 1024986), (24, 854155), (30, 683324), (40, 512493), (60, 341662), (120, 170831), (139, 147480), (278, 73740), (417, 49160), (556, 36870), (695, 29496), (834, 24580), (1112, 18435), (1229, 16680), (1390, 14748), (1668, 12290), (2085, 9832), (2458, 8340), (2780, 7374), (3336, 6145), (3687, 5560), (4170, 4916)]