20165444

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{223}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 40040448

約数和(自身を除く): 19875004

約数列:

[1, 2, 4, 13, 26, 37, 47, 52, 74, 94, 148, 188, 223, 446, 481, 611, 892, 962, 1222, 1739, 1924, 2444, 2899, 3478, 5798, 6956, 8251, 10481, 11596, 16502, 20962, 22607, 33004, 41924, 45214, 90428, 107263, 136253, 214526, 272506, 387797, 429052, 545012, 775594, 1551188, 5041361, 10082722, 20165444]

約数ペア:

[(1, 20165444), (2, 10082722), (4, 5041361), (13, 1551188), (26, 775594), (37, 545012), (47, 429052), (52, 387797), (74, 272506), (94, 214526), (148, 136253), (188, 107263), (223, 90428), (446, 45214), (481, 41924), (611, 33004), (892, 22607), (962, 20962), (1222, 16502), (1739, 11596), (1924, 10481), (2444, 8251), (2899, 6956), (3478, 5798)]