19703475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 40622400

約数和(自身を除く): 20918925

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 33, 45, 55, 57, 75, 95, 99, 165, 171, 209, 225, 275, 285, 419, 475, 495, 627, 825, 855, 1045, 1257, 1425, 1881, 2095, 2475, 3135, 3771, 4275, 4609, 5225, 6285, 7961, 9405, 10475, 13827, 15675, 18855, 23045, 23883, 31425, 39805, 41481, 47025, 69135, 71649, 87571, 94275, 115225, 119415, 199025, 207405, 262713, 345675, 358245, 437855, 597075, 788139, 1037025, 1313565, 1791225, 2189275, 3940695, 6567825, 19703475]

約数ペア:

[(1, 19703475), (3, 6567825), (5, 3940695), (9, 2189275), (11, 1791225), (15, 1313565), (19, 1037025), (25, 788139), (33, 597075), (45, 437855), (55, 358245), (57, 345675), (75, 262713), (95, 207405), (99, 199025), (165, 119415), (171, 115225), (209, 94275), (225, 87571), (275, 71649), (285, 69135), (419, 47025), (475, 41481), (495, 39805), (627, 31425), (825, 23883), (855, 23045), (1045, 18855), (1257, 15675), (1425, 13827), (1881, 10475), (2095, 9405), (2475, 7961), (3135, 6285), (3771, 5225), (4275, 4609)]