21529456

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1163}}^1$

素因数の和:1273

約数の個数: 40

約数和(自身を含む): 45465840

約数和(自身を除く): 23936384

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 1157, 1163, 1424, 2314, 2326, 4628, 4652, 9256, 9304, 15119, 18512, 18608, 30238, 60476, 103507, 120952, 207014, 241904, 414028, 828056, 1345591, 1656112, 2691182, 5382364, 10764728, 21529456]

約数ペア:

[(1, 21529456), (2, 10764728), (4, 5382364), (8, 2691182), (13, 1656112), (16, 1345591), (26, 828056), (52, 414028), (89, 241904), (104, 207014), (178, 120952), (208, 103507), (356, 60476), (712, 30238), (1157, 18608), (1163, 18512), (1424, 15119), (2314, 9304), (2326, 9256), (4628, 4652)]