21602945

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{601}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 32363520

約数和(自身を除く): 10760575

約数列:

[1, 5, 7, 13, 35, 65, 79, 91, 395, 455, 553, 601, 1027, 2765, 3005, 4207, 5135, 7189, 7813, 21035, 35945, 39065, 47479, 54691, 237395, 273455, 332353, 617227, 1661765, 3086135, 4320589, 21602945]

約数ペア:

[(1, 21602945), (5, 4320589), (7, 3086135), (13, 1661765), (35, 617227), (65, 332353), (79, 273455), (91, 237395), (395, 54691), (455, 47479), (553, 39065), (601, 35945), (1027, 21035), (2765, 7813), (3005, 7189), (4207, 5135)]