21653775

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{673}}^1$

素因数の和:713

約数の個数: 72

約数和(自身を含む): 45632496

約数和(自身を除く): 23978721

約数列:

[1, 3, 5, 9, 11, 13, 15, 25, 33, 39, 45, 55, 65, 75, 99, 117, 143, 165, 195, 225, 275, 325, 429, 495, 585, 673, 715, 825, 975, 1287, 2019, 2145, 2475, 2925, 3365, 3575, 6057, 6435, 7403, 8749, 10095, 10725, 16825, 22209, 26247, 30285, 32175, 37015, 43745, 50475, 66627, 78741, 96239, 111045, 131235, 151425, 185075, 218725, 288717, 333135, 393705, 481195, 555225, 656175, 866151, 1443585, 1665675, 1968525, 2405975, 4330755, 7217925, 21653775]

約数ペア:

[(1, 21653775), (3, 7217925), (5, 4330755), (9, 2405975), (11, 1968525), (13, 1665675), (15, 1443585), (25, 866151), (33, 656175), (39, 555225), (45, 481195), (55, 393705), (65, 333135), (75, 288717), (99, 218725), (117, 185075), (143, 151425), (165, 131235), (195, 111045), (225, 96239), (275, 78741), (325, 66627), (429, 50475), (495, 43745), (585, 37015), (673, 32175), (715, 30285), (825, 26247), (975, 22209), (1287, 16825), (2019, 10725), (2145, 10095), (2475, 8749), (2925, 7403), (3365, 6435), (3575, 6057)]