19948180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3851}}^1$

素因数の和:3904

約数の個数: 48

約数和(自身を含む): 49182336

約数和(自身を除く): 29234156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 3851, 5180, 7702, 15404, 19255, 26957, 38510, 53914, 77020, 107828, 134785, 142487, 269570, 284974, 539140, 569948, 712435, 997409, 1424870, 1994818, 2849740, 3989636, 4987045, 9974090, 19948180]

約数ペア:

[(1, 19948180), (2, 9974090), (4, 4987045), (5, 3989636), (7, 2849740), (10, 1994818), (14, 1424870), (20, 997409), (28, 712435), (35, 569948), (37, 539140), (70, 284974), (74, 269570), (140, 142487), (148, 134785), (185, 107828), (259, 77020), (370, 53914), (518, 38510), (740, 26957), (1036, 19255), (1295, 15404), (2590, 7702), (3851, 5180)]