1802780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 4408320

約数和(自身を除く): 2605540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 163, 316, 326, 395, 553, 652, 790, 815, 1106, 1141, 1580, 1630, 2212, 2282, 2765, 3260, 4564, 5530, 5705, 11060, 11410, 12877, 22820, 25754, 51508, 64385, 90139, 128770, 180278, 257540, 360556, 450695, 901390, 1802780]

約数ペア:

[(1, 1802780), (2, 901390), (4, 450695), (5, 360556), (7, 257540), (10, 180278), (14, 128770), (20, 90139), (28, 64385), (35, 51508), (70, 25754), (79, 22820), (140, 12877), (158, 11410), (163, 11060), (316, 5705), (326, 5530), (395, 4564), (553, 3260), (652, 2765), (790, 2282), (815, 2212), (1106, 1630), (1141, 1580)]