28102425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 55413120

約数和(自身を除く): 27310695

約数列:

[1, 3, 5, 13, 15, 19, 25, 37, 39, 41, 57, 65, 75, 95, 111, 123, 185, 195, 205, 247, 285, 325, 475, 481, 533, 555, 615, 703, 741, 779, 925, 975, 1025, 1235, 1425, 1443, 1517, 1599, 2109, 2337, 2405, 2665, 2775, 3075, 3515, 3705, 3895, 4551, 6175, 7215, 7585, 7995, 9139, 10127, 10545, 11685, 12025, 13325, 17575, 18525, 19475, 19721, 22755, 27417, 28823, 30381, 36075, 37925, 39975, 45695, 50635, 52725, 58425, 59163, 86469, 98605, 113775, 137085, 144115, 151905, 228475, 253175, 295815, 374699, 432345, 493025, 685425, 720575, 759525, 1124097, 1479075, 1873495, 2161725, 5620485, 9367475, 28102425]

約数ペア:

[(1, 28102425), (3, 9367475), (5, 5620485), (13, 2161725), (15, 1873495), (19, 1479075), (25, 1124097), (37, 759525), (39, 720575), (41, 685425), (57, 493025), (65, 432345), (75, 374699), (95, 295815), (111, 253175), (123, 228475), (185, 151905), (195, 144115), (205, 137085), (247, 113775), (285, 98605), (325, 86469), (475, 59163), (481, 58425), (533, 52725), (555, 50635), (615, 45695), (703, 39975), (741, 37925), (779, 36075), (925, 30381), (975, 28823), (1025, 27417), (1235, 22755), (1425, 19721), (1443, 19475), (1517, 18525), (1599, 17575), (2109, 13325), (2337, 12025), (2405, 11685), (2665, 10545), (2775, 10127), (3075, 9139), (3515, 7995), (3705, 7585), (3895, 7215), (4551, 6175)]