19212500

素因数分解:

$2^2\times 5^5\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 72

約数和(自身を含む): 44294040

約数和(自身を除く): 25081540

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 53, 58, 100, 106, 116, 125, 145, 212, 250, 265, 290, 500, 530, 580, 625, 725, 1060, 1250, 1325, 1450, 1537, 2500, 2650, 2900, 3074, 3125, 3625, 5300, 6148, 6250, 6625, 7250, 7685, 12500, 13250, 14500, 15370, 18125, 26500, 30740, 33125, 36250, 38425, 66250, 72500, 76850, 90625, 132500, 153700, 165625, 181250, 192125, 331250, 362500, 384250, 662500, 768500, 960625, 1921250, 3842500, 4803125, 9606250, 19212500]

約数ペア:

[(1, 19212500), (2, 9606250), (4, 4803125), (5, 3842500), (10, 1921250), (20, 960625), (25, 768500), (29, 662500), (50, 384250), (53, 362500), (58, 331250), (100, 192125), (106, 181250), (116, 165625), (125, 153700), (145, 132500), (212, 90625), (250, 76850), (265, 72500), (290, 66250), (500, 38425), (530, 36250), (580, 33125), (625, 30740), (725, 26500), (1060, 18125), (1250, 15370), (1325, 14500), (1450, 13250), (1537, 12500), (2500, 7685), (2650, 7250), (2900, 6625), (3074, 6250), (3125, 6148), (3625, 5300)]