21287472840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19710623}}^1$

素因数の和:19710643

約数の個数: 64

約数和(自身を含む): 70958246400

約数和(自身を除く): 49670773560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19710623, 39421246, 59131869, 78842492, 98553115, 118263738, 157684984, 177395607, 197106230, 236527476, 295659345, 354791214, 394212460, 473054952, 532186821, 591318690, 709582428, 788424920, 886978035, 1064373642, 1182637380, 1419164856, 1773956070, 2128747284, 2365274760, 2660934105, 3547912140, 4257494568, 5321868210, 7095824280, 10643736420, 21287472840]

約数ペア:

[(1, 21287472840), (2, 10643736420), (3, 7095824280), (4, 5321868210), (5, 4257494568), (6, 3547912140), (8, 2660934105), (9, 2365274760), (10, 2128747284), (12, 1773956070), (15, 1419164856), (18, 1182637380), (20, 1064373642), (24, 886978035), (27, 788424920), (30, 709582428), (36, 591318690), (40, 532186821), (45, 473054952), (54, 394212460), (60, 354791214), (72, 295659345), (90, 236527476), (108, 197106230), (120, 177395607), (135, 157684984), (180, 118263738), (216, 98553115), (270, 78842492), (360, 59131869), (540, 39421246), (1080, 19710623)]