21320712

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 128

約数和(自身を含む): 69120000

約数和(自身を除く): 47799288

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 59, 63, 72, 84, 108, 118, 126, 168, 177, 189, 216, 236, 239, 252, 354, 378, 413, 472, 478, 504, 531, 708, 717, 756, 826, 956, 1062, 1239, 1416, 1434, 1512, 1593, 1652, 1673, 1912, 2124, 2151, 2478, 2868, 3186, 3304, 3346, 3717, 4248, 4302, 4956, 5019, 5736, 6372, 6453, 6692, 7434, 8604, 9912, 10038, 11151, 12744, 12906, 13384, 14101, 14868, 15057, 17208, 20076, 22302, 25812, 28202, 29736, 30114, 40152, 42303, 44604, 45171, 51624, 56404, 60228, 84606, 89208, 90342, 98707, 112808, 120456, 126909, 169212, 180684, 197414, 253818, 296121, 338424, 361368, 380727, 394828, 507636, 592242, 761454, 789656, 888363, 1015272, 1184484, 1522908, 1776726, 2368968, 2665089, 3045816, 3553452, 5330178, 7106904, 10660356, 21320712]

約数ペア:

[(1, 21320712), (2, 10660356), (3, 7106904), (4, 5330178), (6, 3553452), (7, 3045816), (8, 2665089), (9, 2368968), (12, 1776726), (14, 1522908), (18, 1184484), (21, 1015272), (24, 888363), (27, 789656), (28, 761454), (36, 592242), (42, 507636), (54, 394828), (56, 380727), (59, 361368), (63, 338424), (72, 296121), (84, 253818), (108, 197414), (118, 180684), (126, 169212), (168, 126909), (177, 120456), (189, 112808), (216, 98707), (236, 90342), (239, 89208), (252, 84606), (354, 60228), (378, 56404), (413, 51624), (472, 45171), (478, 44604), (504, 42303), (531, 40152), (708, 30114), (717, 29736), (756, 28202), (826, 25812), (956, 22302), (1062, 20076), (1239, 17208), (1416, 15057), (1434, 14868), (1512, 14101), (1593, 13384), (1652, 12906), (1673, 12744), (1912, 11151), (2124, 10038), (2151, 9912), (2478, 8604), (2868, 7434), (3186, 6692), (3304, 6453), (3346, 6372), (3717, 5736), (4248, 5019), (4302, 4956)]