20559664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{577}}^1$

素因数の和:733

約数の個数: 40

約数和(自身を含む): 42573168

約数和(自身を除く): 22013504

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 131, 136, 262, 272, 524, 577, 1048, 1154, 2096, 2227, 2308, 4454, 4616, 8908, 9232, 9809, 17816, 19618, 35632, 39236, 75587, 78472, 151174, 156944, 302348, 604696, 1209392, 1284979, 2569958, 5139916, 10279832, 20559664]

約数ペア:

[(1, 20559664), (2, 10279832), (4, 5139916), (8, 2569958), (16, 1284979), (17, 1209392), (34, 604696), (68, 302348), (131, 156944), (136, 151174), (262, 78472), (272, 75587), (524, 39236), (577, 35632), (1048, 19618), (1154, 17816), (2096, 9809), (2227, 9232), (2308, 8908), (4454, 4616)]