20156940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{991}}^1$

素因数の和:1119

約数の個数: 72

約数和(自身を含む): 61746048

約数和(自身を除く): 41589108

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 113, 180, 226, 339, 452, 565, 678, 991, 1017, 1130, 1356, 1695, 1982, 2034, 2260, 2973, 3390, 3964, 4068, 4955, 5085, 5946, 6780, 8919, 9910, 10170, 11892, 14865, 17838, 19820, 20340, 29730, 35676, 44595, 59460, 89190, 111983, 178380, 223966, 335949, 447932, 559915, 671898, 1007847, 1119830, 1343796, 1679745, 2015694, 2239660, 3359490, 4031388, 5039235, 6718980, 10078470, 20156940]

約数ペア:

[(1, 20156940), (2, 10078470), (3, 6718980), (4, 5039235), (5, 4031388), (6, 3359490), (9, 2239660), (10, 2015694), (12, 1679745), (15, 1343796), (18, 1119830), (20, 1007847), (30, 671898), (36, 559915), (45, 447932), (60, 335949), (90, 223966), (113, 178380), (180, 111983), (226, 89190), (339, 59460), (452, 44595), (565, 35676), (678, 29730), (991, 20340), (1017, 19820), (1130, 17838), (1356, 14865), (1695, 11892), (1982, 10170), (2034, 9910), (2260, 8919), (2973, 6780), (3390, 5946), (3964, 5085), (4068, 4955)]