209959638

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:653

約数の個数: 64

約数和(自身を含む): 490613760

約数和(自身を除く): 280654122

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 142, 181, 213, 362, 389, 426, 497, 543, 778, 994, 1086, 1167, 1267, 1491, 2334, 2534, 2723, 2982, 3801, 5446, 7602, 8169, 12851, 16338, 25702, 27619, 38553, 55238, 70409, 77106, 82857, 89957, 140818, 165714, 179914, 193333, 211227, 269871, 386666, 422454, 492863, 539742, 579999, 985726, 1159998, 1478589, 2957178, 4999039, 9998078, 14997117, 29994234, 34993273, 69986546, 104979819, 209959638]

約数ペア:

[(1, 209959638), (2, 104979819), (3, 69986546), (6, 34993273), (7, 29994234), (14, 14997117), (21, 9998078), (42, 4999039), (71, 2957178), (142, 1478589), (181, 1159998), (213, 985726), (362, 579999), (389, 539742), (426, 492863), (497, 422454), (543, 386666), (778, 269871), (994, 211227), (1086, 193333), (1167, 179914), (1267, 165714), (1491, 140818), (2334, 89957), (2534, 82857), (2723, 77106), (2982, 70409), (3801, 55238), (5446, 38553), (7602, 27619), (8169, 25702), (12851, 16338)]