21658340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5791}}^1$

素因数の和:5828

約数の個数: 48

約数和(自身を含む): 52545024

約数和(自身を除く): 30886684

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5791, 11582, 23164, 28955, 57910, 63701, 98447, 115820, 127402, 196894, 254804, 318505, 393788, 492235, 637010, 984470, 1082917, 1274020, 1968940, 2165834, 4331668, 5414585, 10829170, 21658340]

約数ペア:

[(1, 21658340), (2, 10829170), (4, 5414585), (5, 4331668), (10, 2165834), (11, 1968940), (17, 1274020), (20, 1082917), (22, 984470), (34, 637010), (44, 492235), (55, 393788), (68, 318505), (85, 254804), (110, 196894), (170, 127402), (187, 115820), (220, 98447), (340, 63701), (374, 57910), (748, 28955), (935, 23164), (1870, 11582), (3740, 5791)]