20123758840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{130369}}^1$

素因数の和:130624

約数の個数: 64

約数和(自身を含む): 48153463200

約数和(自身を除く): 28029704360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 227, 340, 454, 680, 908, 1135, 1816, 2270, 3859, 4540, 7718, 9080, 15436, 19295, 30872, 38590, 77180, 130369, 154360, 260738, 521476, 651845, 1042952, 1303690, 2216273, 2607380, 4432546, 5214760, 8865092, 11081365, 17730184, 22162730, 29593763, 44325460, 59187526, 88650920, 118375052, 147968815, 236750104, 295937630, 503093971, 591875260, 1006187942, 1183750520, 2012375884, 2515469855, 4024751768, 5030939710, 10061879420, 20123758840]

約数ペア:

[(1, 20123758840), (2, 10061879420), (4, 5030939710), (5, 4024751768), (8, 2515469855), (10, 2012375884), (17, 1183750520), (20, 1006187942), (34, 591875260), (40, 503093971), (68, 295937630), (85, 236750104), (136, 147968815), (170, 118375052), (227, 88650920), (340, 59187526), (454, 44325460), (680, 29593763), (908, 22162730), (1135, 17730184), (1816, 11081365), (2270, 8865092), (3859, 5214760), (4540, 4432546), (7718, 2607380), (9080, 2216273), (15436, 1303690), (19295, 1042952), (30872, 651845), (38590, 521476), (77180, 260738), (130369, 154360)]