17939900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:419

約数の個数: 72

約数和(自身を含む): 43497216

約数和(自身を除く): 25557316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 47, 50, 55, 94, 100, 110, 188, 220, 235, 275, 347, 470, 517, 550, 694, 940, 1034, 1100, 1175, 1388, 1735, 2068, 2350, 2585, 3470, 3817, 4700, 5170, 6940, 7634, 8675, 10340, 12925, 15268, 16309, 17350, 19085, 25850, 32618, 34700, 38170, 51700, 65236, 76340, 81545, 95425, 163090, 179399, 190850, 326180, 358798, 381700, 407725, 717596, 815450, 896995, 1630900, 1793990, 3587980, 4484975, 8969950, 17939900]

約数ペア:

[(1, 17939900), (2, 8969950), (4, 4484975), (5, 3587980), (10, 1793990), (11, 1630900), (20, 896995), (22, 815450), (25, 717596), (44, 407725), (47, 381700), (50, 358798), (55, 326180), (94, 190850), (100, 179399), (110, 163090), (188, 95425), (220, 81545), (235, 76340), (275, 65236), (347, 51700), (470, 38170), (517, 34700), (550, 32618), (694, 25850), (940, 19085), (1034, 17350), (1100, 16309), (1175, 15268), (1388, 12925), (1735, 10340), (2068, 8675), (2350, 7634), (2585, 6940), (3470, 5170), (3817, 4700)]