51680980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1009}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 117588240

約数和(自身を除く): 65907260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 788, 985, 1009, 1970, 2018, 2561, 3940, 4036, 5045, 5122, 10090, 10244, 12805, 13117, 20180, 25610, 26234, 51220, 52468, 65585, 131170, 198773, 262340, 397546, 795092, 993865, 1987730, 2584049, 3975460, 5168098, 10336196, 12920245, 25840490, 51680980]

約数ペア:

[(1, 51680980), (2, 25840490), (4, 12920245), (5, 10336196), (10, 5168098), (13, 3975460), (20, 2584049), (26, 1987730), (52, 993865), (65, 795092), (130, 397546), (197, 262340), (260, 198773), (394, 131170), (788, 65585), (985, 52468), (1009, 51220), (1970, 26234), (2018, 25610), (2561, 20180), (3940, 13117), (4036, 12805), (5045, 10244), (5122, 10090)]