21991930

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{409}}^1$

素因数の和:718

約数の個数: 32

約数和(自身を含む): 41918400

約数和(自身を除く): 19926470

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 283, 409, 566, 818, 1415, 2045, 2830, 4090, 5377, 7771, 10754, 15542, 26885, 38855, 53770, 77710, 115747, 231494, 578735, 1157470, 2199193, 4398386, 10995965, 21991930]

約数ペア:

[(1, 21991930), (2, 10995965), (5, 4398386), (10, 2199193), (19, 1157470), (38, 578735), (95, 231494), (190, 115747), (283, 77710), (409, 53770), (566, 38855), (818, 26885), (1415, 15542), (2045, 10754), (2830, 7771), (4090, 5377)]