1987100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:686

約数の個数: 36

約数和(自身を含む): 4458048

約数和(自身を除く): 2470948

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 641, 775, 1282, 1550, 2564, 3100, 3205, 6410, 12820, 16025, 19871, 32050, 39742, 64100, 79484, 99355, 198710, 397420, 496775, 993550, 1987100]

約数ペア:

[(1, 1987100), (2, 993550), (4, 496775), (5, 397420), (10, 198710), (20, 99355), (25, 79484), (31, 64100), (50, 39742), (62, 32050), (100, 19871), (124, 16025), (155, 12820), (310, 6410), (620, 3205), (641, 3100), (775, 2564), (1282, 1550)]