20175286815

素因数分解:

$3^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1\times {\mathrm{2851}}^1$

素因数の和:3142

約数の個数: 80

約数和(自身を含む): 36748156896

約数和(自身を除く): 16572870081

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 101, 135, 173, 303, 405, 505, 519, 865, 909, 1515, 1557, 2595, 2727, 2851, 4545, 4671, 7785, 8181, 8553, 13635, 14013, 14255, 17473, 23355, 25659, 40905, 42765, 52419, 70065, 76977, 87365, 128295, 157257, 230931, 262095, 287951, 384885, 471771, 493223, 786285, 863853, 1154655, 1415313, 1439755, 1479669, 2358855, 2466115, 2591559, 4319265, 4439007, 7076565, 7398345, 7774677, 12957795, 13317021, 22195035, 23324031, 38873385, 39951063, 49815523, 66585105, 116620155, 149446569, 199755315, 249077615, 448339707, 747232845, 1345019121, 2241698535, 4035057363, 6725095605, 20175286815]

約数ペア:

[(1, 20175286815), (3, 6725095605), (5, 4035057363), (9, 2241698535), (15, 1345019121), (27, 747232845), (45, 448339707), (81, 249077615), (101, 199755315), (135, 149446569), (173, 116620155), (303, 66585105), (405, 49815523), (505, 39951063), (519, 38873385), (865, 23324031), (909, 22195035), (1515, 13317021), (1557, 12957795), (2595, 7774677), (2727, 7398345), (2851, 7076565), (4545, 4439007), (4671, 4319265), (7785, 2591559), (8181, 2466115), (8553, 2358855), (13635, 1479669), (14013, 1439755), (14255, 1415313), (17473, 1154655), (23355, 863853), (25659, 786285), (40905, 493223), (42765, 471771), (52419, 384885), (70065, 287951), (76977, 262095), (87365, 230931), (128295, 157257)]