21719790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{647}}^1$

素因数の和:1033

約数の個数: 48

約数和(自身を含む): 56710368

約数和(自身を除く): 34990578

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 373, 647, 746, 1119, 1294, 1865, 1941, 2238, 3235, 3357, 3730, 3882, 5595, 5823, 6470, 6714, 9705, 11190, 11646, 16785, 19410, 29115, 33570, 58230, 241331, 482662, 723993, 1206655, 1447986, 2171979, 2413310, 3619965, 4343958, 7239930, 10859895, 21719790]

約数ペア:

[(1, 21719790), (2, 10859895), (3, 7239930), (5, 4343958), (6, 3619965), (9, 2413310), (10, 2171979), (15, 1447986), (18, 1206655), (30, 723993), (45, 482662), (90, 241331), (373, 58230), (647, 33570), (746, 29115), (1119, 19410), (1294, 16785), (1865, 11646), (1941, 11190), (2238, 9705), (3235, 6714), (3357, 6470), (3730, 5823), (3882, 5595)]