78481780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15887}}^1$

素因数の和:15928

約数の個数: 48

約数和(自身を含む): 186842880

約数和(自身を除く): 108361100

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 15887, 31774, 63548, 79435, 158870, 206531, 301853, 317740, 413062, 603706, 826124, 1032655, 1207412, 1509265, 2065310, 3018530, 3924089, 4130620, 6037060, 7848178, 15696356, 19620445, 39240890, 78481780]

約数ペア:

[(1, 78481780), (2, 39240890), (4, 19620445), (5, 15696356), (10, 7848178), (13, 6037060), (19, 4130620), (20, 3924089), (26, 3018530), (38, 2065310), (52, 1509265), (65, 1207412), (76, 1032655), (95, 826124), (130, 603706), (190, 413062), (247, 317740), (260, 301853), (380, 206531), (494, 158870), (988, 79435), (1235, 63548), (2470, 31774), (4940, 15887)]