20427160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{241}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 50006880

約数和(自身を除く): 29579720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 163, 241, 260, 326, 482, 520, 652, 815, 964, 1205, 1304, 1630, 1928, 2119, 2410, 3133, 3260, 4238, 4820, 6266, 6520, 8476, 9640, 10595, 12532, 15665, 16952, 21190, 25064, 31330, 39283, 42380, 62660, 78566, 84760, 125320, 157132, 196415, 314264, 392830, 510679, 785660, 1021358, 1571320, 2042716, 2553395, 4085432, 5106790, 10213580, 20427160]

約数ペア:

[(1, 20427160), (2, 10213580), (4, 5106790), (5, 4085432), (8, 2553395), (10, 2042716), (13, 1571320), (20, 1021358), (26, 785660), (40, 510679), (52, 392830), (65, 314264), (104, 196415), (130, 157132), (163, 125320), (241, 84760), (260, 78566), (326, 62660), (482, 42380), (520, 39283), (652, 31330), (815, 25064), (964, 21190), (1205, 16952), (1304, 15665), (1630, 12532), (1928, 10595), (2119, 9640), (2410, 8476), (3133, 6520), (3260, 6266), (4238, 4820)]