21751860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:457

約数の個数: 96

約数和(自身を含む): 66608640

約数和(自身を除く): 44856780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 79, 130, 156, 158, 195, 237, 260, 316, 353, 390, 395, 474, 706, 780, 790, 948, 1027, 1059, 1185, 1412, 1580, 1765, 2054, 2118, 2370, 3081, 3530, 4108, 4236, 4589, 4740, 5135, 5295, 6162, 7060, 9178, 10270, 10590, 12324, 13767, 15405, 18356, 20540, 21180, 22945, 27534, 27887, 30810, 45890, 55068, 55774, 61620, 68835, 83661, 91780, 111548, 137670, 139435, 167322, 275340, 278870, 334644, 362531, 418305, 557740, 725062, 836610, 1087593, 1450124, 1673220, 1812655, 2175186, 3625310, 4350372, 5437965, 7250620, 10875930, 21751860]

約数ペア:

[(1, 21751860), (2, 10875930), (3, 7250620), (4, 5437965), (5, 4350372), (6, 3625310), (10, 2175186), (12, 1812655), (13, 1673220), (15, 1450124), (20, 1087593), (26, 836610), (30, 725062), (39, 557740), (52, 418305), (60, 362531), (65, 334644), (78, 278870), (79, 275340), (130, 167322), (156, 139435), (158, 137670), (195, 111548), (237, 91780), (260, 83661), (316, 68835), (353, 61620), (390, 55774), (395, 55068), (474, 45890), (706, 30810), (780, 27887), (790, 27534), (948, 22945), (1027, 21180), (1059, 20540), (1185, 18356), (1412, 15405), (1580, 13767), (1765, 12324), (2054, 10590), (2118, 10270), (2370, 9178), (3081, 7060), (3530, 6162), (4108, 5295), (4236, 5135), (4589, 4740)]