21808728

素因数分解:

$2^3\times 3^2\times {\mathrm{101}}^1\times {\mathrm{2999}}^1$

素因数の和:3112

約数の個数: 48

約数和(自身を含む): 59670000

約数和(自身を除く): 37861272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 101, 202, 303, 404, 606, 808, 909, 1212, 1818, 2424, 2999, 3636, 5998, 7272, 8997, 11996, 17994, 23992, 26991, 35988, 53982, 71976, 107964, 215928, 302899, 605798, 908697, 1211596, 1817394, 2423192, 2726091, 3634788, 5452182, 7269576, 10904364, 21808728]

約数ペア:

[(1, 21808728), (2, 10904364), (3, 7269576), (4, 5452182), (6, 3634788), (8, 2726091), (9, 2423192), (12, 1817394), (18, 1211596), (24, 908697), (36, 605798), (72, 302899), (101, 215928), (202, 107964), (303, 71976), (404, 53982), (606, 35988), (808, 26991), (909, 23992), (1212, 17994), (1818, 11996), (2424, 8997), (2999, 7272), (3636, 5998)]