20371960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2347}}^1$

素因数の和:2396

約数の個数: 64

約数和(自身を含む): 54097920

約数和(自身を除く): 33725960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2347, 4340, 4694, 8680, 9388, 11735, 16429, 18776, 23470, 32858, 46940, 65716, 72757, 82145, 93880, 131432, 145514, 164290, 291028, 328580, 363785, 509299, 582056, 657160, 727570, 1018598, 1455140, 2037196, 2546495, 2910280, 4074392, 5092990, 10185980, 20371960]

約数ペア:

[(1, 20371960), (2, 10185980), (4, 5092990), (5, 4074392), (7, 2910280), (8, 2546495), (10, 2037196), (14, 1455140), (20, 1018598), (28, 727570), (31, 657160), (35, 582056), (40, 509299), (56, 363785), (62, 328580), (70, 291028), (124, 164290), (140, 145514), (155, 131432), (217, 93880), (248, 82145), (280, 72757), (310, 65716), (434, 46940), (620, 32858), (868, 23470), (1085, 18776), (1240, 16429), (1736, 11735), (2170, 9388), (2347, 8680), (4340, 4694)]