205685720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{2309}}^1$

素因数の和:2468

約数の個数: 64

約数和(自身を含む): 493970400

約数和(自身を除く): 288284680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 131, 136, 170, 262, 340, 524, 655, 680, 1048, 1310, 2227, 2309, 2620, 4454, 4618, 5240, 8908, 9236, 11135, 11545, 17816, 18472, 22270, 23090, 39253, 44540, 46180, 78506, 89080, 92360, 157012, 196265, 302479, 314024, 392530, 604958, 785060, 1209916, 1512395, 1570120, 2419832, 3024790, 5142143, 6049580, 10284286, 12099160, 20568572, 25710715, 41137144, 51421430, 102842860, 205685720]

約数ペア:

[(1, 205685720), (2, 102842860), (4, 51421430), (5, 41137144), (8, 25710715), (10, 20568572), (17, 12099160), (20, 10284286), (34, 6049580), (40, 5142143), (68, 3024790), (85, 2419832), (131, 1570120), (136, 1512395), (170, 1209916), (262, 785060), (340, 604958), (524, 392530), (655, 314024), (680, 302479), (1048, 196265), (1310, 157012), (2227, 92360), (2309, 89080), (2620, 78506), (4454, 46180), (4618, 44540), (5240, 39253), (8908, 23090), (9236, 22270), (11135, 18472), (11545, 17816)]