80890940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{739}}^1$

素因数の和:1182

約数の個数: 48

約数和(自身を含む): 183620640

約数和(自身を除く): 102729700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 421, 739, 842, 1478, 1684, 2105, 2956, 3695, 4210, 5473, 7390, 8420, 9607, 10946, 14780, 19214, 21892, 27365, 38428, 48035, 54730, 96070, 109460, 192140, 311119, 622238, 1244476, 1555595, 3111190, 4044547, 6222380, 8089094, 16178188, 20222735, 40445470, 80890940]

約数ペア:

[(1, 80890940), (2, 40445470), (4, 20222735), (5, 16178188), (10, 8089094), (13, 6222380), (20, 4044547), (26, 3111190), (52, 1555595), (65, 1244476), (130, 622238), (260, 311119), (421, 192140), (739, 109460), (842, 96070), (1478, 54730), (1684, 48035), (2105, 38428), (2956, 27365), (3695, 21892), (4210, 19214), (5473, 14780), (7390, 10946), (8420, 9607)]