21904380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1667}}^1$

素因数の和:1755

約数の個数: 72

約数和(自身を含む): 67393872

約数和(自身を除く): 45489492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1667, 2190, 2628, 3285, 3334, 4380, 5001, 6570, 6668, 8335, 10002, 13140, 15003, 16670, 20004, 25005, 30006, 33340, 50010, 60012, 75015, 100020, 121691, 150030, 243382, 300060, 365073, 486764, 608455, 730146, 1095219, 1216910, 1460292, 1825365, 2190438, 2433820, 3650730, 4380876, 5476095, 7301460, 10952190, 21904380]

約数ペア:

[(1, 21904380), (2, 10952190), (3, 7301460), (4, 5476095), (5, 4380876), (6, 3650730), (9, 2433820), (10, 2190438), (12, 1825365), (15, 1460292), (18, 1216910), (20, 1095219), (30, 730146), (36, 608455), (45, 486764), (60, 365073), (73, 300060), (90, 243382), (146, 150030), (180, 121691), (219, 100020), (292, 75015), (365, 60012), (438, 50010), (657, 33340), (730, 30006), (876, 25005), (1095, 20004), (1314, 16670), (1460, 15003), (1667, 13140), (2190, 10002), (2628, 8335), (3285, 6668), (3334, 6570), (4380, 5001)]