31006820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3847}}^1$

素因数の和:3900

約数の個数: 48

約数和(自身を含む): 72403968

約数和(自身を除く): 41397148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 3847, 4030, 7694, 8060, 15388, 19235, 38470, 50011, 76940, 100022, 119257, 200044, 238514, 250055, 477028, 500110, 596285, 1000220, 1192570, 1550341, 2385140, 3100682, 6201364, 7751705, 15503410, 31006820]

約数ペア:

[(1, 31006820), (2, 15503410), (4, 7751705), (5, 6201364), (10, 3100682), (13, 2385140), (20, 1550341), (26, 1192570), (31, 1000220), (52, 596285), (62, 500110), (65, 477028), (124, 250055), (130, 238514), (155, 200044), (260, 119257), (310, 100022), (403, 76940), (620, 50011), (806, 38470), (1612, 19235), (2015, 15388), (3847, 8060), (4030, 7694)]