256367080

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{2087}}^1$

素因数の和:2218

約数の個数: 64

約数和(自身を含む): 599840640

約数和(自身を除く): 343473560

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 83, 148, 166, 185, 296, 332, 370, 415, 664, 740, 830, 1480, 1660, 2087, 3071, 3320, 4174, 6142, 8348, 10435, 12284, 15355, 16696, 20870, 24568, 30710, 41740, 61420, 77219, 83480, 122840, 154438, 173221, 308876, 346442, 386095, 617752, 692884, 772190, 866105, 1385768, 1544380, 1732210, 3088760, 3464420, 6409177, 6928840, 12818354, 25636708, 32045885, 51273416, 64091770, 128183540, 256367080]

約数ペア:

[(1, 256367080), (2, 128183540), (4, 64091770), (5, 51273416), (8, 32045885), (10, 25636708), (20, 12818354), (37, 6928840), (40, 6409177), (74, 3464420), (83, 3088760), (148, 1732210), (166, 1544380), (185, 1385768), (296, 866105), (332, 772190), (370, 692884), (415, 617752), (664, 386095), (740, 346442), (830, 308876), (1480, 173221), (1660, 154438), (2087, 122840), (3071, 83480), (3320, 77219), (4174, 61420), (6142, 41740), (8348, 30710), (10435, 24568), (12284, 20870), (15355, 16696)]