19979334

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{229}}^1$

素因数の和:405

約数の個数: 48

約数和(自身を含む): 44993520

約数和(自身を除く): 25014186

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 111, 131, 222, 229, 262, 333, 393, 458, 666, 687, 786, 1179, 1374, 2061, 2358, 4122, 4847, 8473, 9694, 14541, 16946, 25419, 29082, 29999, 43623, 50838, 59998, 76257, 87246, 89997, 152514, 179994, 269991, 539982, 1109963, 2219926, 3329889, 6659778, 9989667, 19979334]

約数ペア:

[(1, 19979334), (2, 9989667), (3, 6659778), (6, 3329889), (9, 2219926), (18, 1109963), (37, 539982), (74, 269991), (111, 179994), (131, 152514), (222, 89997), (229, 87246), (262, 76257), (333, 59998), (393, 50838), (458, 43623), (666, 29999), (687, 29082), (786, 25419), (1179, 16946), (1374, 14541), (2061, 9694), (2358, 8473), (4122, 4847)]