18992655

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 39693888

約数和(自身を除く): 20701233

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 37, 45, 51, 55, 61, 85, 99, 111, 153, 165, 183, 185, 187, 255, 305, 333, 407, 495, 549, 555, 561, 629, 671, 765, 915, 935, 1037, 1221, 1665, 1683, 1887, 2013, 2035, 2257, 2745, 2805, 3111, 3145, 3355, 3663, 5185, 5661, 6039, 6105, 6771, 6919, 8415, 9333, 9435, 10065, 11285, 11407, 15555, 18315, 20313, 20757, 24827, 28305, 30195, 33855, 34221, 34595, 38369, 46665, 57035, 62271, 74481, 101565, 102663, 103785, 115107, 124135, 171105, 191845, 223443, 311355, 345321, 372405, 422059, 513315, 575535, 1117215, 1266177, 1726605, 2110295, 3798531, 6330885, 18992655]

約数ペア:

[(1, 18992655), (3, 6330885), (5, 3798531), (9, 2110295), (11, 1726605), (15, 1266177), (17, 1117215), (33, 575535), (37, 513315), (45, 422059), (51, 372405), (55, 345321), (61, 311355), (85, 223443), (99, 191845), (111, 171105), (153, 124135), (165, 115107), (183, 103785), (185, 102663), (187, 101565), (255, 74481), (305, 62271), (333, 57035), (407, 46665), (495, 38369), (549, 34595), (555, 34221), (561, 33855), (629, 30195), (671, 28305), (765, 24827), (915, 20757), (935, 20313), (1037, 18315), (1221, 15555), (1665, 11407), (1683, 11285), (1887, 10065), (2013, 9435), (2035, 9333), (2257, 8415), (2745, 6919), (2805, 6771), (3111, 6105), (3145, 6039), (3355, 5661), (3663, 5185)]