18987510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:453

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 28912650

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 43, 82, 86, 123, 129, 205, 215, 246, 258, 359, 410, 430, 615, 645, 718, 1077, 1230, 1290, 1763, 1795, 2154, 3526, 3590, 5289, 5385, 8815, 10578, 10770, 14719, 15437, 17630, 26445, 29438, 30874, 44157, 46311, 52890, 73595, 77185, 88314, 92622, 147190, 154370, 220785, 231555, 441570, 463110, 632917, 1265834, 1898751, 3164585, 3797502, 6329170, 9493755, 18987510]

約数ペア:

[(1, 18987510), (2, 9493755), (3, 6329170), (5, 3797502), (6, 3164585), (10, 1898751), (15, 1265834), (30, 632917), (41, 463110), (43, 441570), (82, 231555), (86, 220785), (123, 154370), (129, 147190), (205, 92622), (215, 88314), (246, 77185), (258, 73595), (359, 52890), (410, 46311), (430, 44157), (615, 30874), (645, 29438), (718, 26445), (1077, 17630), (1230, 15437), (1290, 14719), (1763, 10770), (1795, 10578), (2154, 8815), (3526, 5385), (3590, 5289)]