18813990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2539}}^1$

素因数の和:2581

約数の個数: 64

約数和(自身を含む): 51206400

約数和(自身を除く): 32392410

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 19, 26, 30, 38, 39, 57, 65, 78, 95, 114, 130, 190, 195, 247, 285, 390, 494, 570, 741, 1235, 1482, 2470, 2539, 3705, 5078, 7410, 7617, 12695, 15234, 25390, 33007, 38085, 48241, 66014, 76170, 96482, 99021, 144723, 165035, 198042, 241205, 289446, 330070, 482410, 495105, 627133, 723615, 990210, 1254266, 1447230, 1881399, 3135665, 3762798, 6271330, 9406995, 18813990]

約数ペア:

[(1, 18813990), (2, 9406995), (3, 6271330), (5, 3762798), (6, 3135665), (10, 1881399), (13, 1447230), (15, 1254266), (19, 990210), (26, 723615), (30, 627133), (38, 495105), (39, 482410), (57, 330070), (65, 289446), (78, 241205), (95, 198042), (114, 165035), (130, 144723), (190, 99021), (195, 96482), (247, 76170), (285, 66014), (390, 48241), (494, 38085), (570, 33007), (741, 25390), (1235, 15234), (1482, 12695), (2470, 7617), (2539, 7410), (3705, 5078)]