20119940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 44513280

約数和(自身を除く): 24393340

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 191, 229, 230, 382, 458, 460, 764, 916, 955, 1145, 1910, 2290, 3820, 4393, 4580, 5267, 8786, 10534, 17572, 21068, 21965, 26335, 43739, 43930, 52670, 87478, 87860, 105340, 174956, 218695, 437390, 874780, 1005997, 2011994, 4023988, 5029985, 10059970, 20119940]

約数ペア:

[(1, 20119940), (2, 10059970), (4, 5029985), (5, 4023988), (10, 2011994), (20, 1005997), (23, 874780), (46, 437390), (92, 218695), (115, 174956), (191, 105340), (229, 87860), (230, 87478), (382, 52670), (458, 43930), (460, 43739), (764, 26335), (916, 21965), (955, 21068), (1145, 17572), (1910, 10534), (2290, 8786), (3820, 5267), (4393, 4580)]