18764820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1709}}^1$

素因数の和:1785

約数の個数: 72

約数和(自身を含む): 57886920

約数和(自身を除く): 39122100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1709, 1830, 2196, 2745, 3418, 3660, 5127, 5490, 6836, 8545, 10254, 10980, 15381, 17090, 20508, 25635, 30762, 34180, 51270, 61524, 76905, 102540, 104249, 153810, 208498, 307620, 312747, 416996, 521245, 625494, 938241, 1042490, 1250988, 1563735, 1876482, 2084980, 3127470, 3752964, 4691205, 6254940, 9382410, 18764820]

約数ペア:

[(1, 18764820), (2, 9382410), (3, 6254940), (4, 4691205), (5, 3752964), (6, 3127470), (9, 2084980), (10, 1876482), (12, 1563735), (15, 1250988), (18, 1042490), (20, 938241), (30, 625494), (36, 521245), (45, 416996), (60, 312747), (61, 307620), (90, 208498), (122, 153810), (180, 104249), (183, 102540), (244, 76905), (305, 61524), (366, 51270), (549, 34180), (610, 30762), (732, 25635), (915, 20508), (1098, 17090), (1220, 15381), (1709, 10980), (1830, 10254), (2196, 8545), (2745, 6836), (3418, 5490), (3660, 5127)]