19939550

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 39580800

約数和(自身を除く): 19641250

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 139, 151, 190, 278, 302, 475, 695, 755, 950, 1390, 1510, 2641, 2869, 3475, 3775, 5282, 5738, 6950, 7550, 13205, 14345, 20989, 26410, 28690, 41978, 66025, 71725, 104945, 132050, 143450, 209890, 398791, 524725, 797582, 1049450, 1993955, 3987910, 9969775, 19939550]

約数ペア:

[(1, 19939550), (2, 9969775), (5, 3987910), (10, 1993955), (19, 1049450), (25, 797582), (38, 524725), (50, 398791), (95, 209890), (139, 143450), (151, 132050), (190, 104945), (278, 71725), (302, 66025), (475, 41978), (695, 28690), (755, 26410), (950, 20989), (1390, 14345), (1510, 13205), (2641, 7550), (2869, 6950), (3475, 5738), (3775, 5282)]