163921960

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{57719}}^1$

素因数の和:57801

約数の個数: 32

約数和(自身を含む): 374025600

約数和(自身を除く): 210103640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 57719, 115438, 230876, 288595, 461752, 577190, 1154380, 2308760, 4098049, 8196098, 16392196, 20490245, 32784392, 40980490, 81960980, 163921960]

約数ペア:

[(1, 163921960), (2, 81960980), (4, 40980490), (5, 32784392), (8, 20490245), (10, 16392196), (20, 8196098), (40, 4098049), (71, 2308760), (142, 1154380), (284, 577190), (355, 461752), (568, 288595), (710, 230876), (1420, 115438), (2840, 57719)]