21139248

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1783}}^1$

素因数の和:1826

約数の個数: 80

約数和(自身を含む): 61940480

約数和(自身を除く): 40801232

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 19, 24, 26, 38, 39, 48, 52, 57, 76, 78, 104, 114, 152, 156, 208, 228, 247, 304, 312, 456, 494, 624, 741, 912, 988, 1482, 1783, 1976, 2964, 3566, 3952, 5349, 5928, 7132, 10698, 11856, 14264, 21396, 23179, 28528, 33877, 42792, 46358, 67754, 69537, 85584, 92716, 101631, 135508, 139074, 185432, 203262, 271016, 278148, 370864, 406524, 440401, 542032, 556296, 813048, 880802, 1112592, 1321203, 1626096, 1761604, 2642406, 3523208, 5284812, 7046416, 10569624, 21139248]

約数ペア:

[(1, 21139248), (2, 10569624), (3, 7046416), (4, 5284812), (6, 3523208), (8, 2642406), (12, 1761604), (13, 1626096), (16, 1321203), (19, 1112592), (24, 880802), (26, 813048), (38, 556296), (39, 542032), (48, 440401), (52, 406524), (57, 370864), (76, 278148), (78, 271016), (104, 203262), (114, 185432), (152, 139074), (156, 135508), (208, 101631), (228, 92716), (247, 85584), (304, 69537), (312, 67754), (456, 46358), (494, 42792), (624, 33877), (741, 28528), (912, 23179), (988, 21396), (1482, 14264), (1783, 11856), (1976, 10698), (2964, 7132), (3566, 5928), (3952, 5349)]