21312252

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 108

約数和(自身を含む): 60750144

約数和(自身を除く): 39437892

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 31, 36, 39, 52, 62, 78, 93, 113, 117, 124, 156, 169, 186, 226, 234, 279, 338, 339, 372, 403, 452, 468, 507, 558, 676, 678, 806, 1014, 1017, 1116, 1209, 1356, 1469, 1521, 1612, 2028, 2034, 2418, 2938, 3042, 3503, 3627, 4068, 4407, 4836, 5239, 5876, 6084, 7006, 7254, 8814, 10478, 10509, 13221, 14012, 14508, 15717, 17628, 19097, 20956, 21018, 26442, 31434, 31527, 38194, 42036, 45539, 47151, 52884, 57291, 62868, 63054, 76388, 91078, 94302, 114582, 126108, 136617, 171873, 182156, 188604, 229164, 273234, 343746, 409851, 546468, 592007, 687492, 819702, 1184014, 1639404, 1776021, 2368028, 3552042, 5328063, 7104084, 10656126, 21312252]

約数ペア:

[(1, 21312252), (2, 10656126), (3, 7104084), (4, 5328063), (6, 3552042), (9, 2368028), (12, 1776021), (13, 1639404), (18, 1184014), (26, 819702), (31, 687492), (36, 592007), (39, 546468), (52, 409851), (62, 343746), (78, 273234), (93, 229164), (113, 188604), (117, 182156), (124, 171873), (156, 136617), (169, 126108), (186, 114582), (226, 94302), (234, 91078), (279, 76388), (338, 63054), (339, 62868), (372, 57291), (403, 52884), (452, 47151), (468, 45539), (507, 42036), (558, 38194), (676, 31527), (678, 31434), (806, 26442), (1014, 21018), (1017, 20956), (1116, 19097), (1209, 17628), (1356, 15717), (1469, 14508), (1521, 14012), (1612, 13221), (2028, 10509), (2034, 10478), (2418, 8814), (2938, 7254), (3042, 7006), (3503, 6084), (3627, 5876), (4068, 5239), (4407, 4836)]