21651336

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:81

約数の個数: 216

約数和(自身を含む): 76226670

約数和(自身を除く): 54575334

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 17, 18, 19, 21, 24, 28, 34, 36, 38, 42, 49, 51, 56, 57, 63, 68, 72, 76, 84, 98, 102, 114, 119, 126, 133, 136, 147, 152, 153, 168, 171, 196, 204, 228, 238, 252, 266, 294, 306, 323, 342, 357, 361, 392, 399, 408, 441, 456, 476, 504, 532, 588, 612, 646, 684, 714, 722, 798, 833, 882, 931, 952, 969, 1064, 1071, 1083, 1176, 1197, 1224, 1292, 1368, 1428, 1444, 1596, 1666, 1764, 1862, 1938, 2142, 2166, 2261, 2394, 2499, 2527, 2584, 2793, 2856, 2888, 2907, 3192, 3249, 3332, 3528, 3724, 3876, 4284, 4332, 4522, 4788, 4998, 5054, 5586, 5814, 6137, 6498, 6664, 6783, 7448, 7497, 7581, 7752, 8379, 8568, 8664, 9044, 9576, 9996, 10108, 11172, 11628, 12274, 12996, 13566, 14994, 15162, 15827, 16758, 17689, 18088, 18411, 19992, 20216, 20349, 22344, 22743, 23256, 24548, 25992, 27132, 29988, 30324, 31654, 33516, 35378, 36822, 40698, 42959, 45486, 47481, 49096, 53067, 54264, 55233, 59976, 60648, 63308, 67032, 70756, 73644, 81396, 85918, 90972, 94962, 106134, 110466, 126616, 128877, 141512, 142443, 147288, 159201, 162792, 171836, 181944, 189924, 212268, 220932, 257754, 284886, 300713, 318402, 343672, 379848, 386631, 424536, 441864, 515508, 569772, 601426, 636804, 773262, 902139, 1031016, 1139544, 1202852, 1273608, 1546524, 1804278, 2405704, 2706417, 3093048, 3608556, 5412834, 7217112, 10825668, 21651336]

約数ペア:

[(1, 21651336), (2, 10825668), (3, 7217112), (4, 5412834), (6, 3608556), (7, 3093048), (8, 2706417), (9, 2405704), (12, 1804278), (14, 1546524), (17, 1273608), (18, 1202852), (19, 1139544), (21, 1031016), (24, 902139), (28, 773262), (34, 636804), (36, 601426), (38, 569772), (42, 515508), (49, 441864), (51, 424536), (56, 386631), (57, 379848), (63, 343672), (68, 318402), (72, 300713), (76, 284886), (84, 257754), (98, 220932), (102, 212268), (114, 189924), (119, 181944), (126, 171836), (133, 162792), (136, 159201), (147, 147288), (152, 142443), (153, 141512), (168, 128877), (171, 126616), (196, 110466), (204, 106134), (228, 94962), (238, 90972), (252, 85918), (266, 81396), (294, 73644), (306, 70756), (323, 67032), (342, 63308), (357, 60648), (361, 59976), (392, 55233), (399, 54264), (408, 53067), (441, 49096), (456, 47481), (476, 45486), (504, 42959), (532, 40698), (588, 36822), (612, 35378), (646, 33516), (684, 31654), (714, 30324), (722, 29988), (798, 27132), (833, 25992), (882, 24548), (931, 23256), (952, 22743), (969, 22344), (1064, 20349), (1071, 20216), (1083, 19992), (1176, 18411), (1197, 18088), (1224, 17689), (1292, 16758), (1368, 15827), (1428, 15162), (1444, 14994), (1596, 13566), (1666, 12996), (1764, 12274), (1862, 11628), (1938, 11172), (2142, 10108), (2166, 9996), (2261, 9576), (2394, 9044), (2499, 8664), (2527, 8568), (2584, 8379), (2793, 7752), (2856, 7581), (2888, 7497), (2907, 7448), (3192, 6783), (3249, 6664), (3332, 6498), (3528, 6137), (3724, 5814), (3876, 5586), (4284, 5054), (4332, 4998), (4522, 4788)]