77856680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 205632000

約数和(自身を除く): 127775320

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 67, 76, 88, 95, 110, 134, 139, 152, 190, 209, 220, 268, 278, 335, 380, 418, 440, 536, 556, 670, 695, 737, 760, 836, 1045, 1112, 1273, 1340, 1390, 1474, 1529, 1672, 2090, 2546, 2641, 2680, 2780, 2948, 3058, 3685, 4180, 5092, 5282, 5560, 5896, 6116, 6365, 7370, 7645, 8360, 9313, 10184, 10564, 12232, 12730, 13205, 14003, 14740, 15290, 18626, 21128, 25460, 26410, 28006, 29051, 29480, 30580, 37252, 46565, 50920, 52820, 56012, 58102, 61160, 70015, 74504, 93130, 102443, 105640, 112024, 116204, 140030, 145255, 176947, 186260, 204886, 232408, 280060, 290510, 353894, 372520, 409772, 512215, 560120, 581020, 707788, 819544, 884735, 1024430, 1162040, 1415576, 1769470, 1946417, 2048860, 3538940, 3892834, 4097720, 7077880, 7785668, 9732085, 15571336, 19464170, 38928340, 77856680]

約数ペア:

[(1, 77856680), (2, 38928340), (4, 19464170), (5, 15571336), (8, 9732085), (10, 7785668), (11, 7077880), (19, 4097720), (20, 3892834), (22, 3538940), (38, 2048860), (40, 1946417), (44, 1769470), (55, 1415576), (67, 1162040), (76, 1024430), (88, 884735), (95, 819544), (110, 707788), (134, 581020), (139, 560120), (152, 512215), (190, 409772), (209, 372520), (220, 353894), (268, 290510), (278, 280060), (335, 232408), (380, 204886), (418, 186260), (440, 176947), (536, 145255), (556, 140030), (670, 116204), (695, 112024), (737, 105640), (760, 102443), (836, 93130), (1045, 74504), (1112, 70015), (1273, 61160), (1340, 58102), (1390, 56012), (1474, 52820), (1529, 50920), (1672, 46565), (2090, 37252), (2546, 30580), (2641, 29480), (2680, 29051), (2780, 28006), (2948, 26410), (3058, 25460), (3685, 21128), (4180, 18626), (5092, 15290), (5282, 14740), (5560, 14003), (5896, 13205), (6116, 12730), (6365, 12232), (7370, 10564), (7645, 10184), (8360, 9313)]