18290320

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2357}}^1$

素因数の和:2467

約数の個数: 40

約数和(自身を含む): 42981624

約数和(自身を除く): 24691304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2357, 3880, 4714, 7760, 9428, 11785, 18856, 23570, 37712, 47140, 94280, 188560, 228629, 457258, 914516, 1143145, 1829032, 2286290, 3658064, 4572580, 9145160, 18290320]

約数ペア:

[(1, 18290320), (2, 9145160), (4, 4572580), (5, 3658064), (8, 2286290), (10, 1829032), (16, 1143145), (20, 914516), (40, 457258), (80, 228629), (97, 188560), (194, 94280), (388, 47140), (485, 37712), (776, 23570), (970, 18856), (1552, 11785), (1940, 9428), (2357, 7760), (3880, 4714)]