20718400

素因数分解:

$2^6\times 5^2\times {\mathrm{23}}^1\times {\mathrm{563}}^1$

素因数の和:608

約数の個数: 84

約数和(自身を含む): 53291232

約数和(自身を除く): 32572832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 115, 160, 184, 200, 230, 320, 368, 400, 460, 563, 575, 736, 800, 920, 1126, 1150, 1472, 1600, 1840, 2252, 2300, 2815, 3680, 4504, 4600, 5630, 7360, 9008, 9200, 11260, 12949, 14075, 18016, 18400, 22520, 25898, 28150, 36032, 36800, 45040, 51796, 56300, 64745, 90080, 103592, 112600, 129490, 180160, 207184, 225200, 258980, 323725, 414368, 450400, 517960, 647450, 828736, 900800, 1035920, 1294900, 2071840, 2589800, 4143680, 5179600, 10359200, 20718400]

約数ペア:

[(1, 20718400), (2, 10359200), (4, 5179600), (5, 4143680), (8, 2589800), (10, 2071840), (16, 1294900), (20, 1035920), (23, 900800), (25, 828736), (32, 647450), (40, 517960), (46, 450400), (50, 414368), (64, 323725), (80, 258980), (92, 225200), (100, 207184), (115, 180160), (160, 129490), (184, 112600), (200, 103592), (230, 90080), (320, 64745), (368, 56300), (400, 51796), (460, 45040), (563, 36800), (575, 36032), (736, 28150), (800, 25898), (920, 22520), (1126, 18400), (1150, 18016), (1472, 14075), (1600, 12949), (1840, 11260), (2252, 9200), (2300, 9008), (2815, 7360), (3680, 5630), (4504, 4600)]