78171280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{421}}^1$

素因数の和:656

約数の個数: 80

約数和(自身を含む): 199683648

約数和(自身を除く): 121512368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 211, 220, 421, 422, 440, 842, 844, 880, 1055, 1684, 1688, 2105, 2110, 2321, 3368, 3376, 4210, 4220, 4631, 4642, 6736, 8420, 8440, 9262, 9284, 11605, 16840, 16880, 18524, 18568, 23155, 23210, 33680, 37048, 37136, 46310, 46420, 74096, 88831, 92620, 92840, 177662, 185240, 185680, 355324, 370480, 444155, 710648, 888310, 977141, 1421296, 1776620, 1954282, 3553240, 3908564, 4885705, 7106480, 7817128, 9771410, 15634256, 19542820, 39085640, 78171280]

約数ペア:

[(1, 78171280), (2, 39085640), (4, 19542820), (5, 15634256), (8, 9771410), (10, 7817128), (11, 7106480), (16, 4885705), (20, 3908564), (22, 3553240), (40, 1954282), (44, 1776620), (55, 1421296), (80, 977141), (88, 888310), (110, 710648), (176, 444155), (211, 370480), (220, 355324), (421, 185680), (422, 185240), (440, 177662), (842, 92840), (844, 92620), (880, 88831), (1055, 74096), (1684, 46420), (1688, 46310), (2105, 37136), (2110, 37048), (2321, 33680), (3368, 23210), (3376, 23155), (4210, 18568), (4220, 18524), (4631, 16880), (4642, 16840), (6736, 11605), (8420, 9284), (8440, 9262)]