20188405540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{748273}}^1$

素因数の和:748372

約数の個数: 48

約数和(自身を含む): 45255611520

約数和(自身を除く): 25067205980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 71, 76, 95, 142, 190, 284, 355, 380, 710, 1349, 1420, 2698, 5396, 6745, 13490, 26980, 748273, 1496546, 2993092, 3741365, 7482730, 14217187, 14965460, 28434374, 53127383, 56868748, 71085935, 106254766, 142171870, 212509532, 265636915, 284343740, 531273830, 1009420277, 1062547660, 2018840554, 4037681108, 5047101385, 10094202770, 20188405540]

約数ペア:

[(1, 20188405540), (2, 10094202770), (4, 5047101385), (5, 4037681108), (10, 2018840554), (19, 1062547660), (20, 1009420277), (38, 531273830), (71, 284343740), (76, 265636915), (95, 212509532), (142, 142171870), (190, 106254766), (284, 71085935), (355, 56868748), (380, 53127383), (710, 28434374), (1349, 14965460), (1420, 14217187), (2698, 7482730), (5396, 3741365), (6745, 2993092), (13490, 1496546), (26980, 748273)]