15982820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{347}}^1$

素因数の和:417

約数の個数: 72

約数和(自身を含む): 39989376

約数和(自身を除く): 24006556

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 347, 470, 490, 658, 694, 940, 980, 1316, 1388, 1645, 1735, 2303, 2429, 3290, 3470, 4606, 4858, 6580, 6940, 9212, 9716, 11515, 12145, 16309, 17003, 23030, 24290, 32618, 34006, 46060, 48580, 65236, 68012, 81545, 85015, 114163, 163090, 170030, 228326, 326180, 340060, 456652, 570815, 799141, 1141630, 1598282, 2283260, 3196564, 3995705, 7991410, 15982820]

約数ペア:

[(1, 15982820), (2, 7991410), (4, 3995705), (5, 3196564), (7, 2283260), (10, 1598282), (14, 1141630), (20, 799141), (28, 570815), (35, 456652), (47, 340060), (49, 326180), (70, 228326), (94, 170030), (98, 163090), (140, 114163), (188, 85015), (196, 81545), (235, 68012), (245, 65236), (329, 48580), (347, 46060), (470, 34006), (490, 32618), (658, 24290), (694, 23030), (940, 17003), (980, 16309), (1316, 12145), (1388, 11515), (1645, 9716), (1735, 9212), (2303, 6940), (2429, 6580), (3290, 4858), (3470, 4606)]