81360320

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3581}}^1$

素因数の和:3669

約数の個数: 56

約数和(自身を含む): 196522848

約数和(自身を除く): 115162528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 284, 320, 355, 568, 710, 1136, 1420, 2272, 2840, 3581, 4544, 5680, 7162, 11360, 14324, 17905, 22720, 28648, 35810, 57296, 71620, 114592, 143240, 229184, 254251, 286480, 508502, 572960, 1017004, 1145920, 1271255, 2034008, 2542510, 4068016, 5085020, 8136032, 10170040, 16272064, 20340080, 40680160, 81360320]

約数ペア:

[(1, 81360320), (2, 40680160), (4, 20340080), (5, 16272064), (8, 10170040), (10, 8136032), (16, 5085020), (20, 4068016), (32, 2542510), (40, 2034008), (64, 1271255), (71, 1145920), (80, 1017004), (142, 572960), (160, 508502), (284, 286480), (320, 254251), (355, 229184), (568, 143240), (710, 114592), (1136, 71620), (1420, 57296), (2272, 35810), (2840, 28648), (3581, 22720), (4544, 17905), (5680, 14324), (7162, 11360)]