18986820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4457}}^1$

素因数の和:4540

約数の個数: 48

約数和(自身を含む): 53923968

約数和(自身を除く): 34937148

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4457, 8914, 13371, 17828, 22285, 26742, 44570, 53484, 66855, 89140, 133710, 267420, 316447, 632894, 949341, 1265788, 1582235, 1898682, 3164470, 3797364, 4746705, 6328940, 9493410, 18986820]

約数ペア:

[(1, 18986820), (2, 9493410), (3, 6328940), (4, 4746705), (5, 3797364), (6, 3164470), (10, 1898682), (12, 1582235), (15, 1265788), (20, 949341), (30, 632894), (60, 316447), (71, 267420), (142, 133710), (213, 89140), (284, 66855), (355, 53484), (426, 44570), (710, 26742), (852, 22285), (1065, 17828), (1420, 13371), (2130, 8914), (4260, 4457)]