221208735

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1800

約数の個数: 64

約数和(自身を含む): 416586240

約数和(自身を除く): 195377505

約数列:

[1, 3, 5, 11, 15, 19, 33, 41, 55, 57, 95, 123, 165, 205, 209, 285, 451, 615, 627, 779, 1045, 1353, 1721, 2255, 2337, 3135, 3895, 5163, 6765, 8569, 8605, 11685, 18931, 25707, 25815, 32699, 42845, 56793, 70561, 94655, 98097, 128535, 163495, 211683, 283965, 352805, 359689, 490485, 776171, 1058415, 1079067, 1340659, 1798445, 2328513, 3880855, 4021977, 5395335, 6703295, 11642565, 14747249, 20109885, 44241747, 73736245, 221208735]

約数ペア:

[(1, 221208735), (3, 73736245), (5, 44241747), (11, 20109885), (15, 14747249), (19, 11642565), (33, 6703295), (41, 5395335), (55, 4021977), (57, 3880855), (95, 2328513), (123, 1798445), (165, 1340659), (205, 1079067), (209, 1058415), (285, 776171), (451, 490485), (615, 359689), (627, 352805), (779, 283965), (1045, 211683), (1353, 163495), (1721, 128535), (2255, 98097), (2337, 94655), (3135, 70561), (3895, 56793), (5163, 42845), (6765, 32699), (8569, 25815), (8605, 25707), (11685, 18931)]