20119185

素因数分解:

$3^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 37477440

約数和(自身を除く): 17358255

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 243, 261, 405, 435, 571, 783, 1215, 1305, 1713, 2349, 2855, 3915, 5139, 7047, 8565, 11745, 15417, 16559, 25695, 35235, 46251, 49677, 77085, 82795, 138753, 149031, 231255, 248385, 447093, 693765, 745155, 1341279, 2235465, 4023837, 6706395, 20119185]

約数ペア:

[(1, 20119185), (3, 6706395), (5, 4023837), (9, 2235465), (15, 1341279), (27, 745155), (29, 693765), (45, 447093), (81, 248385), (87, 231255), (135, 149031), (145, 138753), (243, 82795), (261, 77085), (405, 49677), (435, 46251), (571, 35235), (783, 25695), (1215, 16559), (1305, 15417), (1713, 11745), (2349, 8565), (2855, 7047), (3915, 5139)]