19489210

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{761}}^1$

素因数の和:978

約数の個数: 32

約数和(自身を含む): 38020752

約数和(自身を除く): 18531542

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 197, 394, 761, 985, 1522, 1970, 2561, 3805, 5122, 7610, 9893, 12805, 19786, 25610, 49465, 98930, 149917, 299834, 749585, 1499170, 1948921, 3897842, 9744605, 19489210]

約数ペア:

[(1, 19489210), (2, 9744605), (5, 3897842), (10, 1948921), (13, 1499170), (26, 749585), (65, 299834), (130, 149917), (197, 98930), (394, 49465), (761, 25610), (985, 19786), (1522, 12805), (1970, 9893), (2561, 7610), (3805, 5122)]