77829880

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{257}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 180001440

約数和(自身を除く): 102171560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 113, 134, 226, 257, 268, 335, 452, 514, 536, 565, 670, 904, 1028, 1130, 1285, 1340, 2056, 2260, 2570, 2680, 4520, 5140, 7571, 10280, 15142, 17219, 29041, 30284, 34438, 37855, 58082, 60568, 68876, 75710, 86095, 116164, 137752, 145205, 151420, 172190, 232328, 290410, 302840, 344380, 580820, 688760, 1161640, 1945747, 3891494, 7782988, 9728735, 15565976, 19457470, 38914940, 77829880]

約数ペア:

[(1, 77829880), (2, 38914940), (4, 19457470), (5, 15565976), (8, 9728735), (10, 7782988), (20, 3891494), (40, 1945747), (67, 1161640), (113, 688760), (134, 580820), (226, 344380), (257, 302840), (268, 290410), (335, 232328), (452, 172190), (514, 151420), (536, 145205), (565, 137752), (670, 116164), (904, 86095), (1028, 75710), (1130, 68876), (1285, 60568), (1340, 58082), (2056, 37855), (2260, 34438), (2570, 30284), (2680, 29041), (4520, 17219), (5140, 15142), (7571, 10280)]