21397572

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 144

約数和(自身を含む): 67267200

約数和(自身を除く): 45869628

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 41, 42, 57, 63, 76, 82, 84, 109, 114, 123, 126, 133, 164, 171, 218, 228, 246, 252, 266, 287, 327, 342, 369, 399, 436, 492, 532, 574, 654, 684, 738, 763, 779, 798, 861, 981, 1148, 1197, 1308, 1476, 1526, 1558, 1596, 1722, 1962, 2071, 2289, 2337, 2394, 2583, 3052, 3116, 3444, 3924, 4142, 4469, 4578, 4674, 4788, 5166, 5453, 6213, 6867, 7011, 8284, 8938, 9156, 9348, 10332, 10906, 12426, 13407, 13734, 14022, 14497, 16359, 17876, 18639, 21812, 24852, 26814, 27468, 28044, 28994, 31283, 32718, 37278, 40221, 43491, 49077, 53628, 57988, 62566, 65436, 74556, 80442, 84911, 86982, 93849, 98154, 125132, 130473, 160884, 169822, 173964, 187698, 196308, 254733, 260946, 281547, 339644, 375396, 509466, 521892, 563094, 594377, 764199, 1018932, 1126188, 1188754, 1528398, 1783131, 2377508, 3056796, 3566262, 5349393, 7132524, 10698786, 21397572]

約数ペア:

[(1, 21397572), (2, 10698786), (3, 7132524), (4, 5349393), (6, 3566262), (7, 3056796), (9, 2377508), (12, 1783131), (14, 1528398), (18, 1188754), (19, 1126188), (21, 1018932), (28, 764199), (36, 594377), (38, 563094), (41, 521892), (42, 509466), (57, 375396), (63, 339644), (76, 281547), (82, 260946), (84, 254733), (109, 196308), (114, 187698), (123, 173964), (126, 169822), (133, 160884), (164, 130473), (171, 125132), (218, 98154), (228, 93849), (246, 86982), (252, 84911), (266, 80442), (287, 74556), (327, 65436), (342, 62566), (369, 57988), (399, 53628), (436, 49077), (492, 43491), (532, 40221), (574, 37278), (654, 32718), (684, 31283), (738, 28994), (763, 28044), (779, 27468), (798, 26814), (861, 24852), (981, 21812), (1148, 18639), (1197, 17876), (1308, 16359), (1476, 14497), (1526, 14022), (1558, 13734), (1596, 13407), (1722, 12426), (1962, 10906), (2071, 10332), (2289, 9348), (2337, 9156), (2394, 8938), (2583, 8284), (3052, 7011), (3116, 6867), (3444, 6213), (3924, 5453), (4142, 5166), (4469, 4788), (4578, 4674)]