18702930920

素因数分解:

$2^3\times 5^1\times {\mathrm{3407}}^1\times {\mathrm{137239}}^1$

素因数の和:140657

約数の個数: 32

約数和(自身を含む): 42094252800

約数和(自身を除く): 23391321880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3407, 6814, 13628, 17035, 27256, 34070, 68140, 136280, 137239, 274478, 548956, 686195, 1097912, 1372390, 2744780, 5489560, 467573273, 935146546, 1870293092, 2337866365, 3740586184, 4675732730, 9351465460, 18702930920]

約数ペア:

[(1, 18702930920), (2, 9351465460), (4, 4675732730), (5, 3740586184), (8, 2337866365), (10, 1870293092), (20, 935146546), (40, 467573273), (3407, 5489560), (6814, 2744780), (13628, 1372390), (17035, 1097912), (27256, 686195), (34070, 548956), (68140, 274478), (136280, 137239)]