861328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 40

約数和(自身を含む): 1859256

約数和(自身を除く): 997928

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 101, 104, 164, 202, 208, 328, 404, 533, 656, 808, 1066, 1313, 1616, 2132, 2626, 4141, 4264, 5252, 8282, 8528, 10504, 16564, 21008, 33128, 53833, 66256, 107666, 215332, 430664, 861328]

約数ペア:

[(1, 861328), (2, 430664), (4, 215332), (8, 107666), (13, 66256), (16, 53833), (26, 33128), (41, 21008), (52, 16564), (82, 10504), (101, 8528), (104, 8282), (164, 5252), (202, 4264), (208, 4141), (328, 2626), (404, 2132), (533, 1616), (656, 1313), (808, 1066)]