20386720

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2711}}^1$

素因数の和:2773

約数の個数: 48

約数和(自身を含む): 49206528

約数和(自身を除く): 28819808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2711, 3760, 5422, 7520, 10844, 13555, 21688, 27110, 43376, 54220, 86752, 108440, 127417, 216880, 254834, 433760, 509668, 637085, 1019336, 1274170, 2038672, 2548340, 4077344, 5096680, 10193360, 20386720]

約数ペア:

[(1, 20386720), (2, 10193360), (4, 5096680), (5, 4077344), (8, 2548340), (10, 2038672), (16, 1274170), (20, 1019336), (32, 637085), (40, 509668), (47, 433760), (80, 254834), (94, 216880), (160, 127417), (188, 108440), (235, 86752), (376, 54220), (470, 43376), (752, 27110), (940, 21688), (1504, 13555), (1880, 10844), (2711, 7520), (3760, 5422)]