19994340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{11491}}^1$

素因数の和:11532

約数の個数: 48

約数和(自身を含む): 57919680

約数和(自身を除く): 37925340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 11491, 22982, 34473, 45964, 57455, 68946, 114910, 137892, 172365, 229820, 333239, 344730, 666478, 689460, 999717, 1332956, 1666195, 1999434, 3332390, 3998868, 4998585, 6664780, 9997170, 19994340]

約数ペア:

[(1, 19994340), (2, 9997170), (3, 6664780), (4, 4998585), (5, 3998868), (6, 3332390), (10, 1999434), (12, 1666195), (15, 1332956), (20, 999717), (29, 689460), (30, 666478), (58, 344730), (60, 333239), (87, 229820), (116, 172365), (145, 137892), (174, 114910), (290, 68946), (348, 57455), (435, 45964), (580, 34473), (870, 22982), (1740, 11491)]