21102692

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 44271360

約数和(自身を除く): 23168668

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 53, 62, 76, 106, 124, 169, 212, 247, 338, 403, 494, 589, 676, 689, 806, 988, 1007, 1178, 1378, 1612, 1643, 2014, 2356, 2756, 3211, 3286, 4028, 5239, 6422, 6572, 7657, 8957, 10478, 12844, 13091, 15314, 17914, 20956, 21359, 26182, 30628, 31217, 35828, 42718, 52364, 62434, 85436, 99541, 124868, 170183, 199082, 277667, 340366, 398164, 405821, 555334, 680732, 811642, 1110668, 1623284, 5275673, 10551346, 21102692]

約数ペア:

[(1, 21102692), (2, 10551346), (4, 5275673), (13, 1623284), (19, 1110668), (26, 811642), (31, 680732), (38, 555334), (52, 405821), (53, 398164), (62, 340366), (76, 277667), (106, 199082), (124, 170183), (169, 124868), (212, 99541), (247, 85436), (338, 62434), (403, 52364), (494, 42718), (589, 35828), (676, 31217), (689, 30628), (806, 26182), (988, 21359), (1007, 20956), (1178, 17914), (1378, 15314), (1612, 13091), (1643, 12844), (2014, 10478), (2356, 8957), (2756, 7657), (3211, 6572), (3286, 6422), (4028, 5239)]