19755560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{761}}^1$

素因数の和:842

約数の個数: 64

約数和(自身を含む): 49377600

約数和(自身を除く): 29622040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 88, 110, 118, 220, 236, 295, 440, 472, 590, 649, 761, 1180, 1298, 1522, 2360, 2596, 3044, 3245, 3805, 5192, 6088, 6490, 7610, 8371, 12980, 15220, 16742, 25960, 30440, 33484, 41855, 44899, 66968, 83710, 89798, 167420, 179596, 224495, 334840, 359192, 448990, 493889, 897980, 987778, 1795960, 1975556, 2469445, 3951112, 4938890, 9877780, 19755560]

約数ペア:

[(1, 19755560), (2, 9877780), (4, 4938890), (5, 3951112), (8, 2469445), (10, 1975556), (11, 1795960), (20, 987778), (22, 897980), (40, 493889), (44, 448990), (55, 359192), (59, 334840), (88, 224495), (110, 179596), (118, 167420), (220, 89798), (236, 83710), (295, 66968), (440, 44899), (472, 41855), (590, 33484), (649, 30440), (761, 25960), (1180, 16742), (1298, 15220), (1522, 12980), (2360, 8371), (2596, 7610), (3044, 6490), (3245, 6088), (3805, 5192)]