1557220

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{227}}^1$

素因数の和:257

約数の個数: 48

約数和(自身を含む): 3830400

約数和(自身を除く): 2273180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 227, 245, 343, 454, 490, 686, 908, 980, 1135, 1372, 1589, 1715, 2270, 3178, 3430, 4540, 6356, 6860, 7945, 11123, 15890, 22246, 31780, 44492, 55615, 77861, 111230, 155722, 222460, 311444, 389305, 778610, 1557220]

約数ペア:

[(1, 1557220), (2, 778610), (4, 389305), (5, 311444), (7, 222460), (10, 155722), (14, 111230), (20, 77861), (28, 55615), (35, 44492), (49, 31780), (70, 22246), (98, 15890), (140, 11123), (196, 7945), (227, 6860), (245, 6356), (343, 4540), (454, 3430), (490, 3178), (686, 2270), (908, 1715), (980, 1589), (1135, 1372)]