21402270

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{599}}^1$

素因数の和:1009

約数の個数: 48

約数和(自身を含む): 55879200

約数和(自身を除く): 34476930

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 397, 599, 794, 1191, 1198, 1797, 1985, 2382, 2995, 3573, 3594, 3970, 5391, 5955, 5990, 7146, 8985, 10782, 11910, 17865, 17970, 26955, 35730, 53910, 237803, 475606, 713409, 1189015, 1426818, 2140227, 2378030, 3567045, 4280454, 7134090, 10701135, 21402270]

約数ペア:

[(1, 21402270), (2, 10701135), (3, 7134090), (5, 4280454), (6, 3567045), (9, 2378030), (10, 2140227), (15, 1426818), (18, 1189015), (30, 713409), (45, 475606), (90, 237803), (397, 53910), (599, 35730), (794, 26955), (1191, 17970), (1198, 17865), (1797, 11910), (1985, 10782), (2382, 8985), (2995, 7146), (3573, 5990), (3594, 5955), (3970, 5391)]