81856580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 194482176

約数和(自身を除く): 112625596

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 67, 74, 127, 130, 134, 148, 185, 254, 260, 268, 335, 370, 481, 508, 635, 670, 740, 871, 962, 1270, 1340, 1651, 1742, 1924, 2405, 2479, 2540, 3302, 3484, 4355, 4699, 4810, 4958, 6604, 8255, 8509, 8710, 9398, 9620, 9916, 12395, 16510, 17018, 17420, 18796, 23495, 24790, 32227, 33020, 34036, 42545, 46990, 49580, 61087, 64454, 85090, 93980, 110617, 122174, 128908, 161135, 170180, 221234, 244348, 305435, 314833, 322270, 442468, 553085, 610870, 629666, 644540, 1106170, 1221740, 1259332, 1574165, 2212340, 3148330, 4092829, 6296660, 8185658, 16371316, 20464145, 40928290, 81856580]

約数ペア:

[(1, 81856580), (2, 40928290), (4, 20464145), (5, 16371316), (10, 8185658), (13, 6296660), (20, 4092829), (26, 3148330), (37, 2212340), (52, 1574165), (65, 1259332), (67, 1221740), (74, 1106170), (127, 644540), (130, 629666), (134, 610870), (148, 553085), (185, 442468), (254, 322270), (260, 314833), (268, 305435), (335, 244348), (370, 221234), (481, 170180), (508, 161135), (635, 128908), (670, 122174), (740, 110617), (871, 93980), (962, 85090), (1270, 64454), (1340, 61087), (1651, 49580), (1742, 46990), (1924, 42545), (2405, 34036), (2479, 33020), (2540, 32227), (3302, 24790), (3484, 23495), (4355, 18796), (4699, 17420), (4810, 17018), (4958, 16510), (6604, 12395), (8255, 9916), (8509, 9620), (8710, 9398)]