15985000

素因数分解:

$2^3\times 5^4\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:188

約数の個数: 80

約数和(自身を含む): 39362400

約数和(自身を除く): 23377400

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 125, 139, 184, 200, 230, 250, 278, 460, 500, 556, 575, 625, 695, 920, 1000, 1112, 1150, 1250, 1390, 2300, 2500, 2780, 2875, 3197, 3475, 4600, 5000, 5560, 5750, 6394, 6950, 11500, 12788, 13900, 14375, 15985, 17375, 23000, 25576, 27800, 28750, 31970, 34750, 57500, 63940, 69500, 79925, 86875, 115000, 127880, 139000, 159850, 173750, 319700, 347500, 399625, 639400, 695000, 799250, 1598500, 1998125, 3197000, 3996250, 7992500, 15985000]

約数ペア:

[(1, 15985000), (2, 7992500), (4, 3996250), (5, 3197000), (8, 1998125), (10, 1598500), (20, 799250), (23, 695000), (25, 639400), (40, 399625), (46, 347500), (50, 319700), (92, 173750), (100, 159850), (115, 139000), (125, 127880), (139, 115000), (184, 86875), (200, 79925), (230, 69500), (250, 63940), (278, 57500), (460, 34750), (500, 31970), (556, 28750), (575, 27800), (625, 25576), (695, 23000), (920, 17375), (1000, 15985), (1112, 14375), (1150, 13900), (1250, 12788), (1390, 11500), (2300, 6950), (2500, 6394), (2780, 5750), (2875, 5560), (3197, 5000), (3475, 4600)]