21532240

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3407}}^1$

素因数の和:3499

約数の個数: 40

約数和(自身を含む): 50711040

約数和(自身を除く): 29178800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3407, 6320, 6814, 13628, 17035, 27256, 34070, 54512, 68140, 136280, 269153, 272560, 538306, 1076612, 1345765, 2153224, 2691530, 4306448, 5383060, 10766120, 21532240]

約数ペア:

[(1, 21532240), (2, 10766120), (4, 5383060), (5, 4306448), (8, 2691530), (10, 2153224), (16, 1345765), (20, 1076612), (40, 538306), (79, 272560), (80, 269153), (158, 136280), (316, 68140), (395, 54512), (632, 34070), (790, 27256), (1264, 17035), (1580, 13628), (3160, 6814), (3407, 6320)]