21130252

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:139

約数の個数: 96

約数和(自身を含む): 48009024

約数和(自身を除く): 26878772

約数列:

[1, 2, 4, 11, 13, 17, 22, 26, 34, 41, 44, 52, 53, 68, 82, 106, 143, 164, 187, 212, 221, 286, 374, 442, 451, 533, 572, 583, 689, 697, 748, 884, 901, 902, 1066, 1166, 1378, 1394, 1802, 1804, 2132, 2173, 2332, 2431, 2756, 2788, 3604, 4346, 4862, 5863, 7579, 7667, 8692, 9061, 9724, 9911, 11713, 11726, 15158, 15334, 18122, 19822, 23426, 23452, 23903, 28249, 30316, 30668, 36244, 36941, 39644, 46852, 47806, 56498, 73882, 95612, 99671, 112996, 128843, 147764, 199342, 257686, 310739, 398684, 406351, 480233, 515372, 621478, 812702, 960466, 1242956, 1625404, 1920932, 5282563, 10565126, 21130252]

約数ペア:

[(1, 21130252), (2, 10565126), (4, 5282563), (11, 1920932), (13, 1625404), (17, 1242956), (22, 960466), (26, 812702), (34, 621478), (41, 515372), (44, 480233), (52, 406351), (53, 398684), (68, 310739), (82, 257686), (106, 199342), (143, 147764), (164, 128843), (187, 112996), (212, 99671), (221, 95612), (286, 73882), (374, 56498), (442, 47806), (451, 46852), (533, 39644), (572, 36941), (583, 36244), (689, 30668), (697, 30316), (748, 28249), (884, 23903), (901, 23452), (902, 23426), (1066, 19822), (1166, 18122), (1378, 15334), (1394, 15158), (1802, 11726), (1804, 11713), (2132, 9911), (2173, 9724), (2332, 9061), (2431, 8692), (2756, 7667), (2788, 7579), (3604, 5863), (4346, 4862)]