20121869080

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1123}}^1\times {\mathrm{2251}}^1$

素因数の和:3584

約数の個数: 64

約数和(自身を含む): 45562464000

約数和(自身を除く): 25440594920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1123, 1592, 1990, 2246, 2251, 3980, 4492, 4502, 5615, 7960, 8984, 9004, 11230, 11255, 18008, 22460, 22510, 44920, 45020, 90040, 223477, 446954, 447949, 893908, 895898, 1117385, 1787816, 1791796, 2234770, 2239745, 2527873, 3583592, 4469540, 4479490, 5055746, 8939080, 8958980, 10111492, 12639365, 17917960, 20222984, 25278730, 50557460, 101114920, 503046727, 1006093454, 2012186908, 2515233635, 4024373816, 5030467270, 10060934540, 20121869080]

約数ペア:

[(1, 20121869080), (2, 10060934540), (4, 5030467270), (5, 4024373816), (8, 2515233635), (10, 2012186908), (20, 1006093454), (40, 503046727), (199, 101114920), (398, 50557460), (796, 25278730), (995, 20222984), (1123, 17917960), (1592, 12639365), (1990, 10111492), (2246, 8958980), (2251, 8939080), (3980, 5055746), (4492, 4479490), (4502, 4469540), (5615, 3583592), (7960, 2527873), (8984, 2239745), (9004, 2234770), (11230, 1791796), (11255, 1787816), (18008, 1117385), (22460, 895898), (22510, 893908), (44920, 447949), (45020, 446954), (90040, 223477)]