19956080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{691}}^1$

素因数の和:742

約数の個数: 60

約数和(自身を含む): 49039272

約数和(自身を除く): 29083192

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 691, 722, 760, 1382, 1444, 1520, 1805, 2764, 2888, 3455, 3610, 5528, 5776, 6910, 7220, 11056, 13129, 13820, 14440, 26258, 27640, 28880, 52516, 55280, 65645, 105032, 131290, 210064, 249451, 262580, 498902, 525160, 997804, 1050320, 1247255, 1995608, 2494510, 3991216, 4989020, 9978040, 19956080]

約数ペア:

[(1, 19956080), (2, 9978040), (4, 4989020), (5, 3991216), (8, 2494510), (10, 1995608), (16, 1247255), (19, 1050320), (20, 997804), (38, 525160), (40, 498902), (76, 262580), (80, 249451), (95, 210064), (152, 131290), (190, 105032), (304, 65645), (361, 55280), (380, 52516), (691, 28880), (722, 27640), (760, 26258), (1382, 14440), (1444, 13820), (1520, 13129), (1805, 11056), (2764, 7220), (2888, 6910), (3455, 5776), (3610, 5528)]