21756696

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 59119200

約数和(自身を除く): 37362504

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 137, 156, 274, 312, 411, 509, 548, 822, 1018, 1096, 1527, 1644, 1781, 2036, 3054, 3288, 3562, 4072, 5343, 6108, 6617, 7124, 10686, 12216, 13234, 14248, 19851, 21372, 26468, 39702, 42744, 52936, 69733, 79404, 139466, 158808, 209199, 278932, 418398, 557864, 836796, 906529, 1673592, 1813058, 2719587, 3626116, 5439174, 7252232, 10878348, 21756696]

約数ペア:

[(1, 21756696), (2, 10878348), (3, 7252232), (4, 5439174), (6, 3626116), (8, 2719587), (12, 1813058), (13, 1673592), (24, 906529), (26, 836796), (39, 557864), (52, 418398), (78, 278932), (104, 209199), (137, 158808), (156, 139466), (274, 79404), (312, 69733), (411, 52936), (509, 42744), (548, 39702), (822, 26468), (1018, 21372), (1096, 19851), (1527, 14248), (1644, 13234), (1781, 12216), (2036, 10686), (3054, 7124), (3288, 6617), (3562, 6108), (4072, 5343)]