21159780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{4831}}^1$

素因数の和:4916

約数の個数: 48

約数和(自身を含む): 60071424

約数和(自身を除く): 38911644

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 73, 146, 219, 292, 365, 438, 730, 876, 1095, 1460, 2190, 4380, 4831, 9662, 14493, 19324, 24155, 28986, 48310, 57972, 72465, 96620, 144930, 289860, 352663, 705326, 1057989, 1410652, 1763315, 2115978, 3526630, 4231956, 5289945, 7053260, 10579890, 21159780]

約数ペア:

[(1, 21159780), (2, 10579890), (3, 7053260), (4, 5289945), (5, 4231956), (6, 3526630), (10, 2115978), (12, 1763315), (15, 1410652), (20, 1057989), (30, 705326), (60, 352663), (73, 289860), (146, 144930), (219, 96620), (292, 72465), (365, 57972), (438, 48310), (730, 28986), (876, 24155), (1095, 19324), (1460, 14493), (2190, 9662), (4380, 4831)]