19670840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{431}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 51010560

約数和(自身を除く): 31339720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 431, 652, 815, 862, 1141, 1304, 1630, 1724, 2155, 2282, 3017, 3260, 3448, 4310, 4564, 5705, 6034, 6520, 8620, 9128, 11410, 12068, 15085, 17240, 22820, 24136, 30170, 45640, 60340, 70253, 120680, 140506, 281012, 351265, 491771, 562024, 702530, 983542, 1405060, 1967084, 2458855, 2810120, 3934168, 4917710, 9835420, 19670840]

約数ペア:

[(1, 19670840), (2, 9835420), (4, 4917710), (5, 3934168), (7, 2810120), (8, 2458855), (10, 1967084), (14, 1405060), (20, 983542), (28, 702530), (35, 562024), (40, 491771), (56, 351265), (70, 281012), (140, 140506), (163, 120680), (280, 70253), (326, 60340), (431, 45640), (652, 30170), (815, 24136), (862, 22820), (1141, 17240), (1304, 15085), (1630, 12068), (1724, 11410), (2155, 9128), (2282, 8620), (3017, 6520), (3260, 6034), (3448, 5705), (4310, 4564)]