21458745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{563}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 46807488

約数和(自身を除く): 25348743

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 121, 165, 231, 315, 363, 385, 495, 563, 605, 693, 847, 1089, 1155, 1689, 1815, 2541, 2815, 3465, 3941, 4235, 5067, 5445, 6193, 7623, 8445, 11823, 12705, 18579, 19705, 25335, 30965, 35469, 38115, 43351, 55737, 59115, 68123, 92895, 130053, 177345, 204369, 216755, 278685, 340615, 390159, 476861, 613107, 650265, 1021845, 1430583, 1950795, 2384305, 3065535, 4291749, 7152915, 21458745]

約数ペア:

[(1, 21458745), (3, 7152915), (5, 4291749), (7, 3065535), (9, 2384305), (11, 1950795), (15, 1430583), (21, 1021845), (33, 650265), (35, 613107), (45, 476861), (55, 390159), (63, 340615), (77, 278685), (99, 216755), (105, 204369), (121, 177345), (165, 130053), (231, 92895), (315, 68123), (363, 59115), (385, 55737), (495, 43351), (563, 38115), (605, 35469), (693, 30965), (847, 25335), (1089, 19705), (1155, 18579), (1689, 12705), (1815, 11823), (2541, 8445), (2815, 7623), (3465, 6193), (3941, 5445), (4235, 5067)]