81861760

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3457}}^1$

素因数の和:3513

約数の個数: 64

約数和(自身を含む): 201048120

約数和(自身を除く): 119186360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 1184, 1480, 2368, 2960, 3457, 4736, 5920, 6914, 11840, 13828, 17285, 23680, 27656, 34570, 55312, 69140, 110624, 127909, 138280, 221248, 255818, 276560, 442496, 511636, 553120, 639545, 1023272, 1106240, 1279090, 2046544, 2212480, 2558180, 4093088, 5116360, 8186176, 10232720, 16372352, 20465440, 40930880, 81861760]

約数ペア:

[(1, 81861760), (2, 40930880), (4, 20465440), (5, 16372352), (8, 10232720), (10, 8186176), (16, 5116360), (20, 4093088), (32, 2558180), (37, 2212480), (40, 2046544), (64, 1279090), (74, 1106240), (80, 1023272), (128, 639545), (148, 553120), (160, 511636), (185, 442496), (296, 276560), (320, 255818), (370, 221248), (592, 138280), (640, 127909), (740, 110624), (1184, 69140), (1480, 55312), (2368, 34570), (2960, 27656), (3457, 23680), (4736, 17285), (5920, 13828), (6914, 11840)]