21835395

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 42528096

約数和(自身を除く): 20692701

約数列:

[1, 3, 5, 9, 15, 17, 23, 45, 51, 69, 73, 85, 115, 153, 207, 219, 255, 289, 345, 365, 391, 657, 765, 867, 1035, 1095, 1173, 1241, 1445, 1679, 1955, 2601, 3285, 3519, 3723, 4335, 5037, 5865, 6205, 6647, 8395, 11169, 13005, 15111, 17595, 18615, 19941, 21097, 25185, 28543, 33235, 55845, 59823, 63291, 75555, 85629, 99705, 105485, 142715, 189873, 256887, 299115, 316455, 428145, 485231, 949365, 1284435, 1455693, 2426155, 4367079, 7278465, 21835395]

約数ペア:

[(1, 21835395), (3, 7278465), (5, 4367079), (9, 2426155), (15, 1455693), (17, 1284435), (23, 949365), (45, 485231), (51, 428145), (69, 316455), (73, 299115), (85, 256887), (115, 189873), (153, 142715), (207, 105485), (219, 99705), (255, 85629), (289, 75555), (345, 63291), (365, 59823), (391, 55845), (657, 33235), (765, 28543), (867, 25185), (1035, 21097), (1095, 19941), (1173, 18615), (1241, 17595), (1445, 15111), (1679, 13005), (1955, 11169), (2601, 8395), (3285, 6647), (3519, 6205), (3723, 5865), (4335, 5037)]