21051170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24568030

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 89, 109, 155, 178, 217, 218, 310, 434, 445, 545, 623, 763, 890, 1085, 1090, 1246, 1526, 2170, 2759, 3115, 3379, 3815, 5518, 6230, 6758, 7630, 9701, 13795, 16895, 19313, 19402, 23653, 27590, 33790, 38626, 47306, 48505, 67907, 96565, 97010, 118265, 135814, 193130, 236530, 300731, 339535, 601462, 679070, 1503655, 2105117, 3007310, 4210234, 10525585, 21051170]

約数ペア:

[(1, 21051170), (2, 10525585), (5, 4210234), (7, 3007310), (10, 2105117), (14, 1503655), (31, 679070), (35, 601462), (62, 339535), (70, 300731), (89, 236530), (109, 193130), (155, 135814), (178, 118265), (217, 97010), (218, 96565), (310, 67907), (434, 48505), (445, 47306), (545, 38626), (623, 33790), (763, 27590), (890, 23653), (1085, 19402), (1090, 19313), (1246, 16895), (1526, 13795), (2170, 9701), (2759, 7630), (3115, 6758), (3379, 6230), (3815, 5518)]