54778900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2665

約数の個数: 72

約数和(自身を含む): 136553760

約数和(自身を除く): 81774860

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 190, 209, 220, 275, 380, 418, 475, 550, 836, 950, 1045, 1100, 1900, 2090, 2621, 4180, 5225, 5242, 10450, 10484, 13105, 20900, 26210, 28831, 49799, 52420, 57662, 65525, 99598, 115324, 131050, 144155, 199196, 248995, 262100, 288310, 497990, 547789, 576620, 720775, 995980, 1095578, 1244975, 1441550, 2191156, 2489950, 2738945, 2883100, 4979900, 5477890, 10955780, 13694725, 27389450, 54778900]

約数ペア:

[(1, 54778900), (2, 27389450), (4, 13694725), (5, 10955780), (10, 5477890), (11, 4979900), (19, 2883100), (20, 2738945), (22, 2489950), (25, 2191156), (38, 1441550), (44, 1244975), (50, 1095578), (55, 995980), (76, 720775), (95, 576620), (100, 547789), (110, 497990), (190, 288310), (209, 262100), (220, 248995), (275, 199196), (380, 144155), (418, 131050), (475, 115324), (550, 99598), (836, 65525), (950, 57662), (1045, 52420), (1100, 49799), (1900, 28831), (2090, 26210), (2621, 20900), (4180, 13105), (5225, 10484), (5242, 10450)]