17880980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{709}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 40913040

約数和(自身を除く): 23032060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 97, 130, 194, 260, 388, 485, 709, 970, 1261, 1418, 1940, 2522, 2836, 3545, 5044, 6305, 7090, 9217, 12610, 14180, 18434, 25220, 36868, 46085, 68773, 92170, 137546, 184340, 275092, 343865, 687730, 894049, 1375460, 1788098, 3576196, 4470245, 8940490, 17880980]

約数ペア:

[(1, 17880980), (2, 8940490), (4, 4470245), (5, 3576196), (10, 1788098), (13, 1375460), (20, 894049), (26, 687730), (52, 343865), (65, 275092), (97, 184340), (130, 137546), (194, 92170), (260, 68773), (388, 46085), (485, 36868), (709, 25220), (970, 18434), (1261, 14180), (1418, 12610), (1940, 9217), (2522, 7090), (2836, 6305), (3545, 5044)]