55537780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{761}}^1$

素因数の和:900

約数の個数: 48

約数和(自身を含む): 120975120

約数和(自身を除く): 65437340

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 356, 410, 445, 761, 820, 890, 1522, 1780, 3044, 3649, 3805, 7298, 7610, 14596, 15220, 18245, 31201, 36490, 62402, 67729, 72980, 124804, 135458, 156005, 270916, 312010, 338645, 624020, 677290, 1354580, 2776889, 5553778, 11107556, 13884445, 27768890, 55537780]

約数ペア:

[(1, 55537780), (2, 27768890), (4, 13884445), (5, 11107556), (10, 5553778), (20, 2776889), (41, 1354580), (82, 677290), (89, 624020), (164, 338645), (178, 312010), (205, 270916), (356, 156005), (410, 135458), (445, 124804), (761, 72980), (820, 67729), (890, 62402), (1522, 36490), (1780, 31201), (3044, 18245), (3649, 15220), (3805, 14596), (7298, 7610)]