21267990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{617}}^1$

素因数の和:1013

約数の個数: 48

約数和(自身を含む): 55531008

約数和(自身を除く): 34263018

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 383, 617, 766, 1149, 1234, 1851, 1915, 2298, 3085, 3447, 3702, 3830, 5553, 5745, 6170, 6894, 9255, 11106, 11490, 17235, 18510, 27765, 34470, 55530, 236311, 472622, 708933, 1181555, 1417866, 2126799, 2363110, 3544665, 4253598, 7089330, 10633995, 21267990]

約数ペア:

[(1, 21267990), (2, 10633995), (3, 7089330), (5, 4253598), (6, 3544665), (9, 2363110), (10, 2126799), (15, 1417866), (18, 1181555), (30, 708933), (45, 472622), (90, 236311), (383, 55530), (617, 34470), (766, 27765), (1149, 18510), (1234, 17235), (1851, 11490), (1915, 11106), (2298, 9255), (3085, 6894), (3447, 6170), (3702, 5745), (3830, 5553)]