20797655725

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1\times {\mathrm{521}}^1$

素因数の和:871

約数の個数: 96

約数和(自身を含む): 32716120320

約数和(自身を除く): 11918464595

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 89, 175, 233, 275, 385, 445, 521, 623, 979, 1165, 1631, 1925, 2225, 2563, 2605, 3115, 3647, 4895, 5731, 5825, 6853, 8155, 12815, 13025, 15575, 17941, 18235, 20737, 24475, 28655, 34265, 40117, 40775, 46369, 64075, 89705, 91175, 103685, 121393, 143275, 145159, 171325, 200585, 228107, 231845, 324583, 448525, 510059, 518425, 606965, 725795, 849751, 1002925, 1140535, 1159225, 1335323, 1596749, 1622915, 2550295, 3034825, 3570413, 3628975, 4248755, 5702675, 6676615, 7983745, 8114575, 9347261, 10803977, 12751475, 17852065, 21243775, 33383075, 39918725, 46736305, 54019885, 75627839, 89260325, 118843747, 233681525, 270099425, 378139195, 594218735, 831906229, 1890695975, 2971093675, 4159531145, 20797655725]

約数ペア:

[(1, 20797655725), (5, 4159531145), (7, 2971093675), (11, 1890695975), (25, 831906229), (35, 594218735), (55, 378139195), (77, 270099425), (89, 233681525), (175, 118843747), (233, 89260325), (275, 75627839), (385, 54019885), (445, 46736305), (521, 39918725), (623, 33383075), (979, 21243775), (1165, 17852065), (1631, 12751475), (1925, 10803977), (2225, 9347261), (2563, 8114575), (2605, 7983745), (3115, 6676615), (3647, 5702675), (4895, 4248755), (5731, 3628975), (5825, 3570413), (6853, 3034825), (8155, 2550295), (12815, 1622915), (13025, 1596749), (15575, 1335323), (17941, 1159225), (18235, 1140535), (20737, 1002925), (24475, 849751), (28655, 725795), (34265, 606965), (40117, 518425), (40775, 510059), (46369, 448525), (64075, 324583), (89705, 231845), (91175, 228107), (103685, 200585), (121393, 171325), (143275, 145159)]