25505620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^2$

素因数の和:217

約数の個数: 72

約数和(自身を含む): 64600704

約数和(自身を除く): 39095084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 89, 92, 115, 140, 161, 178, 230, 322, 356, 445, 460, 623, 644, 805, 890, 1246, 1610, 1780, 2047, 2492, 3115, 3220, 4094, 6230, 7921, 8188, 10235, 12460, 14329, 15842, 20470, 28658, 31684, 39605, 40940, 55447, 57316, 71645, 79210, 110894, 143290, 158420, 182183, 221788, 277235, 286580, 364366, 554470, 728732, 910915, 1108940, 1275281, 1821830, 2550562, 3643660, 5101124, 6376405, 12752810, 25505620]

約数ペア:

[(1, 25505620), (2, 12752810), (4, 6376405), (5, 5101124), (7, 3643660), (10, 2550562), (14, 1821830), (20, 1275281), (23, 1108940), (28, 910915), (35, 728732), (46, 554470), (70, 364366), (89, 286580), (92, 277235), (115, 221788), (140, 182183), (161, 158420), (178, 143290), (230, 110894), (322, 79210), (356, 71645), (445, 57316), (460, 55447), (623, 40940), (644, 39605), (805, 31684), (890, 28658), (1246, 20470), (1610, 15842), (1780, 14329), (2047, 12460), (2492, 10235), (3115, 8188), (3220, 7921), (4094, 6230)]