21876556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 21517844

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 89, 116, 163, 178, 326, 356, 377, 652, 754, 1157, 1508, 2119, 2314, 2581, 4238, 4628, 4727, 5162, 8476, 9454, 10324, 14507, 18908, 29014, 33553, 58028, 61451, 67106, 122902, 134212, 188591, 245804, 377182, 420703, 754364, 841406, 1682812, 5469139, 10938278, 21876556]

約数ペア:

[(1, 21876556), (2, 10938278), (4, 5469139), (13, 1682812), (26, 841406), (29, 754364), (52, 420703), (58, 377182), (89, 245804), (116, 188591), (163, 134212), (178, 122902), (326, 67106), (356, 61451), (377, 58028), (652, 33553), (754, 29014), (1157, 18908), (1508, 14507), (2119, 10324), (2314, 9454), (2581, 8476), (4238, 5162), (4628, 4727)]