21207816

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1451}}^1$

素因数の和:1499

約数の個数: 96

約数和(自身を含む): 67953600

約数和(自身を除く): 46745784

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 29, 36, 42, 56, 58, 63, 72, 84, 87, 116, 126, 168, 174, 203, 232, 252, 261, 348, 406, 504, 522, 609, 696, 812, 1044, 1218, 1451, 1624, 1827, 2088, 2436, 2902, 3654, 4353, 4872, 5804, 7308, 8706, 10157, 11608, 13059, 14616, 17412, 20314, 26118, 30471, 34824, 40628, 42079, 52236, 60942, 81256, 84158, 91413, 104472, 121884, 126237, 168316, 182826, 243768, 252474, 294553, 336632, 365652, 378711, 504948, 589106, 731304, 757422, 883659, 1009896, 1178212, 1514844, 1767318, 2356424, 2650977, 3029688, 3534636, 5301954, 7069272, 10603908, 21207816]

約数ペア:

[(1, 21207816), (2, 10603908), (3, 7069272), (4, 5301954), (6, 3534636), (7, 3029688), (8, 2650977), (9, 2356424), (12, 1767318), (14, 1514844), (18, 1178212), (21, 1009896), (24, 883659), (28, 757422), (29, 731304), (36, 589106), (42, 504948), (56, 378711), (58, 365652), (63, 336632), (72, 294553), (84, 252474), (87, 243768), (116, 182826), (126, 168316), (168, 126237), (174, 121884), (203, 104472), (232, 91413), (252, 84158), (261, 81256), (348, 60942), (406, 52236), (504, 42079), (522, 40628), (609, 34824), (696, 30471), (812, 26118), (1044, 20314), (1218, 17412), (1451, 14616), (1624, 13059), (1827, 11608), (2088, 10157), (2436, 8706), (2902, 7308), (3654, 5804), (4353, 4872)]