19788990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{50741}}^1$

素因数の和:50764

約数の個数: 32

約数和(自身を含む): 51147936

約数和(自身を除く): 31358946

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 50741, 101482, 152223, 253705, 304446, 507410, 659633, 761115, 1319266, 1522230, 1978899, 3298165, 3957798, 6596330, 9894495, 19788990]

約数ペア:

[(1, 19788990), (2, 9894495), (3, 6596330), (5, 3957798), (6, 3298165), (10, 1978899), (13, 1522230), (15, 1319266), (26, 761115), (30, 659633), (39, 507410), (65, 304446), (78, 253705), (130, 152223), (195, 101482), (390, 50741)]