20430440

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 28558360

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 53, 92, 106, 115, 184, 212, 230, 265, 419, 424, 460, 530, 838, 920, 1060, 1219, 1676, 2095, 2120, 2438, 3352, 4190, 4876, 6095, 8380, 9637, 9752, 12190, 16760, 19274, 22207, 24380, 38548, 44414, 48185, 48760, 77096, 88828, 96370, 111035, 177656, 192740, 222070, 385480, 444140, 510761, 888280, 1021522, 2043044, 2553805, 4086088, 5107610, 10215220, 20430440]

約数ペア:

[(1, 20430440), (2, 10215220), (4, 5107610), (5, 4086088), (8, 2553805), (10, 2043044), (20, 1021522), (23, 888280), (40, 510761), (46, 444140), (53, 385480), (92, 222070), (106, 192740), (115, 177656), (184, 111035), (212, 96370), (230, 88828), (265, 77096), (419, 48760), (424, 48185), (460, 44414), (530, 38548), (838, 24380), (920, 22207), (1060, 19274), (1219, 16760), (1676, 12190), (2095, 9752), (2120, 9637), (2438, 8380), (3352, 6095), (4190, 4876)]