81910705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 106375680

約数和(自身を除く): 24464975

約数列:

[1, 5, 23, 53, 89, 115, 151, 265, 445, 755, 1219, 2047, 3473, 4717, 6095, 8003, 10235, 13439, 17365, 23585, 40015, 67195, 108491, 184069, 309097, 542455, 712267, 920345, 1545485, 3561335, 16382141, 81910705]

約数ペア:

[(1, 81910705), (5, 16382141), (23, 3561335), (53, 1545485), (89, 920345), (115, 712267), (151, 542455), (265, 309097), (445, 184069), (755, 108491), (1219, 67195), (2047, 40015), (3473, 23585), (4717, 17365), (6095, 13439), (8003, 10235)]