21780648

素因数分解:

$2^3\times 3^2\times {\mathrm{229}}^1\times {\mathrm{1321}}^1$

素因数の和:1562

約数の個数: 48

約数和(自身を含む): 59291700

約数和(自身を除く): 37511052

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 229, 458, 687, 916, 1321, 1374, 1832, 2061, 2642, 2748, 3963, 4122, 5284, 5496, 7926, 8244, 10568, 11889, 15852, 16488, 23778, 31704, 47556, 95112, 302509, 605018, 907527, 1210036, 1815054, 2420072, 2722581, 3630108, 5445162, 7260216, 10890324, 21780648]

約数ペア:

[(1, 21780648), (2, 10890324), (3, 7260216), (4, 5445162), (6, 3630108), (8, 2722581), (9, 2420072), (12, 1815054), (18, 1210036), (24, 907527), (36, 605018), (72, 302509), (229, 95112), (458, 47556), (687, 31704), (916, 23778), (1321, 16488), (1374, 15852), (1832, 11889), (2061, 10568), (2642, 8244), (2748, 7926), (3963, 5496), (4122, 5284)]