208681250

素因数分解:

$2^1\times 5^5\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 395552808

約数和(自身を除く): 186871558

約数列:

[1, 2, 5, 10, 25, 50, 125, 173, 193, 250, 346, 386, 625, 865, 965, 1250, 1730, 1930, 3125, 4325, 4825, 6250, 8650, 9650, 21625, 24125, 33389, 43250, 48250, 66778, 108125, 120625, 166945, 216250, 241250, 333890, 540625, 603125, 834725, 1081250, 1206250, 1669450, 4173625, 8347250, 20868125, 41736250, 104340625, 208681250]

約数ペア:

[(1, 208681250), (2, 104340625), (5, 41736250), (10, 20868125), (25, 8347250), (50, 4173625), (125, 1669450), (173, 1206250), (193, 1081250), (250, 834725), (346, 603125), (386, 540625), (625, 333890), (865, 241250), (965, 216250), (1250, 166945), (1730, 120625), (1930, 108125), (3125, 66778), (4325, 48250), (4825, 43250), (6250, 33389), (8650, 24125), (9650, 21625)]