21615465025

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{74363}}^1$

素因数の和:74542

約数の個数: 48

約数和(自身を含む): 33638704128

約数和(自身を除く): 12023239103

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 151, 175, 275, 385, 755, 1057, 1661, 1925, 3775, 5285, 8305, 11627, 26425, 41525, 58135, 74363, 290675, 371815, 520541, 817993, 1859075, 2602705, 4089965, 5725951, 11228813, 13013525, 20449825, 28629755, 56144065, 78601691, 123516943, 143148775, 280720325, 393008455, 617584715, 864618601, 1965042275, 3087923575, 4323093005, 21615465025]

約数ペア:

[(1, 21615465025), (5, 4323093005), (7, 3087923575), (11, 1965042275), (25, 864618601), (35, 617584715), (55, 393008455), (77, 280720325), (151, 143148775), (175, 123516943), (275, 78601691), (385, 56144065), (755, 28629755), (1057, 20449825), (1661, 13013525), (1925, 11228813), (3775, 5725951), (5285, 4089965), (8305, 2602705), (11627, 1859075), (26425, 817993), (41525, 520541), (58135, 371815), (74363, 290675)]