19781970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{50723}}^1$

素因数の和:50746

約数の個数: 32

約数和(自身を含む): 51129792

約数和(自身を除く): 31347822

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 50723, 101446, 152169, 253615, 304338, 507230, 659399, 760845, 1318798, 1521690, 1978197, 3296995, 3956394, 6593990, 9890985, 19781970]

約数ペア:

[(1, 19781970), (2, 9890985), (3, 6593990), (5, 3956394), (6, 3296995), (10, 1978197), (13, 1521690), (15, 1318798), (26, 760845), (30, 659399), (39, 507230), (65, 304338), (78, 253615), (130, 152169), (195, 101446), (390, 50723)]