19956105

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 38949120

約数和(自身を除く): 18993015

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 83, 117, 135, 137, 195, 249, 351, 411, 415, 585, 685, 747, 1079, 1233, 1245, 1755, 1781, 2055, 2241, 3237, 3699, 3735, 5343, 5395, 6165, 8905, 9711, 11205, 11371, 16029, 16185, 18495, 26715, 29133, 34113, 48087, 48555, 56855, 80145, 102339, 145665, 147823, 170565, 240435, 307017, 443469, 511695, 739115, 1330407, 1535085, 2217345, 3991221, 6652035, 19956105]

約数ペア:

[(1, 19956105), (3, 6652035), (5, 3991221), (9, 2217345), (13, 1535085), (15, 1330407), (27, 739115), (39, 511695), (45, 443469), (65, 307017), (83, 240435), (117, 170565), (135, 147823), (137, 145665), (195, 102339), (249, 80145), (351, 56855), (411, 48555), (415, 48087), (585, 34113), (685, 29133), (747, 26715), (1079, 18495), (1233, 16185), (1245, 16029), (1755, 11371), (1781, 11205), (2055, 9711), (2241, 8905), (3237, 6165), (3699, 5395), (3735, 5343)]