21990228

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1931}}^1$

素因数の和:2024

約数の個数: 48

約数和(自身を含む): 56043456

約数和(自身を除く): 34053228

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 73, 78, 146, 156, 219, 292, 438, 876, 949, 1898, 1931, 2847, 3796, 3862, 5694, 5793, 7724, 11388, 11586, 23172, 25103, 50206, 75309, 100412, 140963, 150618, 281926, 301236, 422889, 563852, 845778, 1691556, 1832519, 3665038, 5497557, 7330076, 10995114, 21990228]

約数ペア:

[(1, 21990228), (2, 10995114), (3, 7330076), (4, 5497557), (6, 3665038), (12, 1832519), (13, 1691556), (26, 845778), (39, 563852), (52, 422889), (73, 301236), (78, 281926), (146, 150618), (156, 140963), (219, 100412), (292, 75309), (438, 50206), (876, 25103), (949, 23172), (1898, 11586), (1931, 11388), (2847, 7724), (3796, 5793), (3862, 5694)]