21990924

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:415

約数の個数: 72

約数和(自身を含む): 58339008

約数和(自身を除く): 36348084

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 47, 82, 94, 123, 141, 164, 188, 246, 282, 317, 369, 423, 492, 564, 634, 738, 846, 951, 1268, 1476, 1692, 1902, 1927, 2853, 3804, 3854, 5706, 5781, 7708, 11412, 11562, 12997, 14899, 17343, 23124, 25994, 29798, 34686, 38991, 44697, 51988, 59596, 69372, 77982, 89394, 116973, 134091, 155964, 178788, 233946, 268182, 467892, 536364, 610859, 1221718, 1832577, 2443436, 3665154, 5497731, 7330308, 10995462, 21990924]

約数ペア:

[(1, 21990924), (2, 10995462), (3, 7330308), (4, 5497731), (6, 3665154), (9, 2443436), (12, 1832577), (18, 1221718), (36, 610859), (41, 536364), (47, 467892), (82, 268182), (94, 233946), (123, 178788), (141, 155964), (164, 134091), (188, 116973), (246, 89394), (282, 77982), (317, 69372), (369, 59596), (423, 51988), (492, 44697), (564, 38991), (634, 34686), (738, 29798), (846, 25994), (951, 23124), (1268, 17343), (1476, 14899), (1692, 12997), (1902, 11562), (1927, 11412), (2853, 7708), (3804, 5781), (3854, 5706)]