20530545

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20112015

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 41, 57, 95, 105, 123, 133, 205, 251, 285, 287, 399, 615, 665, 753, 779, 861, 1255, 1435, 1757, 1995, 2337, 3765, 3895, 4305, 4769, 5271, 5453, 8785, 10291, 11685, 14307, 16359, 23845, 26355, 27265, 30873, 33383, 51455, 71535, 72037, 81795, 100149, 154365, 166915, 195529, 216111, 360185, 500745, 586587, 977645, 1080555, 1368703, 2932935, 4106109, 6843515, 20530545]

約数ペア:

[(1, 20530545), (3, 6843515), (5, 4106109), (7, 2932935), (15, 1368703), (19, 1080555), (21, 977645), (35, 586587), (41, 500745), (57, 360185), (95, 216111), (105, 195529), (123, 166915), (133, 154365), (205, 100149), (251, 81795), (285, 72037), (287, 71535), (399, 51455), (615, 33383), (665, 30873), (753, 27265), (779, 26355), (861, 23845), (1255, 16359), (1435, 14307), (1757, 11685), (1995, 10291), (2337, 8785), (3765, 5453), (3895, 5271), (4305, 4769)]