18654428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 37632000

約数和(自身を除く): 18977572

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 79, 158, 239, 247, 316, 478, 494, 956, 988, 1027, 1501, 2054, 3002, 3107, 4108, 4541, 6004, 6214, 9082, 12428, 18164, 18881, 19513, 37762, 39026, 59033, 75524, 78052, 118066, 236132, 245453, 358739, 490906, 717478, 981812, 1434956, 4663607, 9327214, 18654428]

約数ペア:

[(1, 18654428), (2, 9327214), (4, 4663607), (13, 1434956), (19, 981812), (26, 717478), (38, 490906), (52, 358739), (76, 245453), (79, 236132), (158, 118066), (239, 78052), (247, 75524), (316, 59033), (478, 39026), (494, 37762), (956, 19513), (988, 18881), (1027, 18164), (1501, 12428), (2054, 9082), (3002, 6214), (3107, 6004), (4108, 4541)]