1990140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{809}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 5715360

約数和(自身を除く): 3725220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 82, 123, 164, 205, 246, 410, 492, 615, 809, 820, 1230, 1618, 2427, 2460, 3236, 4045, 4854, 8090, 9708, 12135, 16180, 24270, 33169, 48540, 66338, 99507, 132676, 165845, 199014, 331690, 398028, 497535, 663380, 995070, 1990140]

約数ペア:

[(1, 1990140), (2, 995070), (3, 663380), (4, 497535), (5, 398028), (6, 331690), (10, 199014), (12, 165845), (15, 132676), (20, 99507), (30, 66338), (41, 48540), (60, 33169), (82, 24270), (123, 16180), (164, 12135), (205, 9708), (246, 8090), (410, 4854), (492, 4045), (615, 3236), (809, 2460), (820, 2427), (1230, 1618)]