21836475

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 41776592

約数和(自身を除く): 19940117

約数列:

[1, 3, 5, 9, 15, 25, 37, 43, 45, 61, 75, 111, 129, 183, 185, 215, 225, 305, 333, 387, 549, 555, 645, 915, 925, 1075, 1525, 1591, 1665, 1935, 2257, 2623, 2745, 2775, 3225, 4575, 4773, 6771, 7869, 7955, 8325, 9675, 11285, 13115, 13725, 14319, 20313, 23607, 23865, 33855, 39345, 39775, 56425, 65575, 71595, 97051, 101565, 118035, 119325, 169275, 196725, 291153, 357975, 485255, 507825, 590175, 873459, 1455765, 2426275, 4367295, 7278825, 21836475]

約数ペア:

[(1, 21836475), (3, 7278825), (5, 4367295), (9, 2426275), (15, 1455765), (25, 873459), (37, 590175), (43, 507825), (45, 485255), (61, 357975), (75, 291153), (111, 196725), (129, 169275), (183, 119325), (185, 118035), (215, 101565), (225, 97051), (305, 71595), (333, 65575), (387, 56425), (549, 39775), (555, 39345), (645, 33855), (915, 23865), (925, 23607), (1075, 20313), (1525, 14319), (1591, 13725), (1665, 13115), (1935, 11285), (2257, 9675), (2623, 8325), (2745, 7955), (2775, 7869), (3225, 6771), (4575, 4773)]