20065370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 40476672

約数和(自身を除く): 20411302

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 383, 403, 766, 806, 845, 1690, 1915, 2015, 3830, 4030, 4979, 5239, 9958, 10478, 11873, 23746, 24895, 26195, 49790, 52390, 59365, 64727, 118730, 129454, 154349, 308698, 323635, 647270, 771745, 1543490, 2006537, 4013074, 10032685, 20065370]

約数ペア:

[(1, 20065370), (2, 10032685), (5, 4013074), (10, 2006537), (13, 1543490), (26, 771745), (31, 647270), (62, 323635), (65, 308698), (130, 154349), (155, 129454), (169, 118730), (310, 64727), (338, 59365), (383, 52390), (403, 49790), (766, 26195), (806, 24895), (845, 23746), (1690, 11873), (1915, 10478), (2015, 9958), (3830, 5239), (4030, 4979)]