21007008

素因数分解:

$2^5\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:395

約数の個数: 144

約数和(自身を含む): 68796000

約数和(自身を除く): 47788992

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 19, 22, 24, 32, 33, 36, 38, 44, 48, 57, 66, 72, 76, 88, 96, 99, 114, 132, 144, 152, 171, 176, 198, 209, 228, 264, 288, 304, 342, 349, 352, 396, 418, 456, 528, 608, 627, 684, 698, 792, 836, 912, 1047, 1056, 1254, 1368, 1396, 1584, 1672, 1824, 1881, 2094, 2508, 2736, 2792, 3141, 3168, 3344, 3762, 3839, 4188, 5016, 5472, 5584, 6282, 6631, 6688, 7524, 7678, 8376, 10032, 11168, 11517, 12564, 13262, 15048, 15356, 16752, 19893, 20064, 23034, 25128, 26524, 30096, 30712, 33504, 34551, 39786, 46068, 50256, 53048, 59679, 60192, 61424, 69102, 72941, 79572, 92136, 100512, 106096, 119358, 122848, 138204, 145882, 159144, 184272, 212192, 218823, 238716, 276408, 291764, 318288, 368544, 437646, 477432, 552816, 583528, 636576, 656469, 875292, 954864, 1105632, 1167056, 1312938, 1750584, 1909728, 2334112, 2625876, 3501168, 5251752, 7002336, 10503504, 21007008]

約数ペア:

[(1, 21007008), (2, 10503504), (3, 7002336), (4, 5251752), (6, 3501168), (8, 2625876), (9, 2334112), (11, 1909728), (12, 1750584), (16, 1312938), (18, 1167056), (19, 1105632), (22, 954864), (24, 875292), (32, 656469), (33, 636576), (36, 583528), (38, 552816), (44, 477432), (48, 437646), (57, 368544), (66, 318288), (72, 291764), (76, 276408), (88, 238716), (96, 218823), (99, 212192), (114, 184272), (132, 159144), (144, 145882), (152, 138204), (171, 122848), (176, 119358), (198, 106096), (209, 100512), (228, 92136), (264, 79572), (288, 72941), (304, 69102), (342, 61424), (349, 60192), (352, 59679), (396, 53048), (418, 50256), (456, 46068), (528, 39786), (608, 34551), (627, 33504), (684, 30712), (698, 30096), (792, 26524), (836, 25128), (912, 23034), (1047, 20064), (1056, 19893), (1254, 16752), (1368, 15356), (1396, 15048), (1584, 13262), (1672, 12564), (1824, 11517), (1881, 11168), (2094, 10032), (2508, 8376), (2736, 7678), (2792, 7524), (3141, 6688), (3168, 6631), (3344, 6282), (3762, 5584), (3839, 5472), (4188, 5016)]