81761260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18839}}^1$

素因数の和:18886

約数の個数: 48

約数和(自身を含む): 202567680

約数和(自身を除く): 120806420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 18839, 37678, 75356, 94195, 131873, 188390, 263746, 376780, 527492, 584009, 659365, 1168018, 1318730, 2336036, 2637460, 2920045, 4088063, 5840090, 8176126, 11680180, 16352252, 20440315, 40880630, 81761260]

約数ペア:

[(1, 81761260), (2, 40880630), (4, 20440315), (5, 16352252), (7, 11680180), (10, 8176126), (14, 5840090), (20, 4088063), (28, 2920045), (31, 2637460), (35, 2336036), (62, 1318730), (70, 1168018), (124, 659365), (140, 584009), (155, 527492), (217, 376780), (310, 263746), (434, 188390), (620, 131873), (868, 94195), (1085, 75356), (2170, 37678), (4340, 18839)]