61779940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 132935040

約数和(自身を除く): 71155100

約数列:

[1, 2, 4, 5, 10, 20, 71, 139, 142, 278, 284, 313, 355, 556, 626, 695, 710, 1252, 1390, 1420, 1565, 2780, 3130, 6260, 9869, 19738, 22223, 39476, 43507, 44446, 49345, 87014, 88892, 98690, 111115, 174028, 197380, 217535, 222230, 435070, 444460, 870140, 3088997, 6177994, 12355988, 15444985, 30889970, 61779940]

約数ペア:

[(1, 61779940), (2, 30889970), (4, 15444985), (5, 12355988), (10, 6177994), (20, 3088997), (71, 870140), (139, 444460), (142, 435070), (278, 222230), (284, 217535), (313, 197380), (355, 174028), (556, 111115), (626, 98690), (695, 88892), (710, 87014), (1252, 49345), (1390, 44446), (1420, 43507), (1565, 39476), (2780, 22223), (3130, 19738), (6260, 9869)]