1637420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 3763200

約数和(自身を除く): 2125780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 139, 155, 190, 278, 310, 380, 556, 589, 620, 695, 1178, 1390, 2356, 2641, 2780, 2945, 4309, 5282, 5890, 8618, 10564, 11780, 13205, 17236, 21545, 26410, 43090, 52820, 81871, 86180, 163742, 327484, 409355, 818710, 1637420]

約数ペア:

[(1, 1637420), (2, 818710), (4, 409355), (5, 327484), (10, 163742), (19, 86180), (20, 81871), (31, 52820), (38, 43090), (62, 26410), (76, 21545), (95, 17236), (124, 13205), (139, 11780), (155, 10564), (190, 8618), (278, 5890), (310, 5282), (380, 4309), (556, 2945), (589, 2780), (620, 2641), (695, 2356), (1178, 1390)]