65340760

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^2\times {\mathrm{439}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 149806800

約数和(自身を除く): 84466040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 439, 488, 610, 878, 1220, 1756, 2195, 2440, 3512, 3721, 4390, 7442, 8780, 14884, 17560, 18605, 26779, 29768, 37210, 53558, 74420, 107116, 133895, 148840, 214232, 267790, 535580, 1071160, 1633519, 3267038, 6534076, 8167595, 13068152, 16335190, 32670380, 65340760]

約数ペア:

[(1, 65340760), (2, 32670380), (4, 16335190), (5, 13068152), (8, 8167595), (10, 6534076), (20, 3267038), (40, 1633519), (61, 1071160), (122, 535580), (244, 267790), (305, 214232), (439, 148840), (488, 133895), (610, 107116), (878, 74420), (1220, 53558), (1756, 37210), (2195, 29768), (2440, 26779), (3512, 18605), (3721, 17560), (4390, 14884), (7442, 8780)]