1990534905

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1861}}^1$

素因数の和:2036

約数の個数: 80

約数和(自身を含む): 3785073600

約数和(自身を除く): 1794538695

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 139, 171, 285, 405, 417, 513, 695, 855, 1251, 1539, 1861, 2085, 2565, 2641, 3753, 5583, 6255, 7695, 7923, 9305, 11259, 13205, 16749, 18765, 23769, 27915, 35359, 39615, 50247, 56295, 71307, 83745, 106077, 118845, 150741, 176795, 213921, 251235, 258679, 318231, 356535, 530385, 753705, 776037, 954693, 1069605, 1293395, 1591155, 2328111, 2864079, 3880185, 4773465, 4914901, 6984333, 11640555, 14320395, 14744703, 20952999, 24574505, 34921665, 44234109, 73723515, 104764995, 132702327, 221170545, 398106981, 663511635, 1990534905]

約数ペア:

[(1, 1990534905), (3, 663511635), (5, 398106981), (9, 221170545), (15, 132702327), (19, 104764995), (27, 73723515), (45, 44234109), (57, 34921665), (81, 24574505), (95, 20952999), (135, 14744703), (139, 14320395), (171, 11640555), (285, 6984333), (405, 4914901), (417, 4773465), (513, 3880185), (695, 2864079), (855, 2328111), (1251, 1591155), (1539, 1293395), (1861, 1069605), (2085, 954693), (2565, 776037), (2641, 753705), (3753, 530385), (5583, 356535), (6255, 318231), (7695, 258679), (7923, 251235), (9305, 213921), (11259, 176795), (13205, 150741), (16749, 118845), (18765, 106077), (23769, 83745), (27915, 71307), (35359, 56295), (39615, 50247)]