21319630

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{709}}^1$

素因数の和:844

約数の個数: 32

約数和(自身を含む): 40078080

約数和(自身を除く): 18758450

約数列:

[1, 2, 5, 10, 31, 62, 97, 155, 194, 310, 485, 709, 970, 1418, 3007, 3545, 6014, 7090, 15035, 21979, 30070, 43958, 68773, 109895, 137546, 219790, 343865, 687730, 2131963, 4263926, 10659815, 21319630]

約数ペア:

[(1, 21319630), (2, 10659815), (5, 4263926), (10, 2131963), (31, 687730), (62, 343865), (97, 219790), (155, 137546), (194, 109895), (310, 68773), (485, 43958), (709, 30070), (970, 21979), (1418, 15035), (3007, 7090), (3545, 6014)]