20787630

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{641}}^1$

素因数の和:721

約数の個数: 64

約数和(自身を含む): 53250048

約数和(自身を除く): 32462418

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 47, 69, 94, 115, 138, 141, 230, 235, 282, 345, 470, 641, 690, 705, 1081, 1282, 1410, 1923, 2162, 3205, 3243, 3846, 5405, 6410, 6486, 9615, 10810, 14743, 16215, 19230, 29486, 30127, 32430, 44229, 60254, 73715, 88458, 90381, 147430, 150635, 180762, 221145, 301270, 442290, 451905, 692921, 903810, 1385842, 2078763, 3464605, 4157526, 6929210, 10393815, 20787630]

約数ペア:

[(1, 20787630), (2, 10393815), (3, 6929210), (5, 4157526), (6, 3464605), (10, 2078763), (15, 1385842), (23, 903810), (30, 692921), (46, 451905), (47, 442290), (69, 301270), (94, 221145), (115, 180762), (138, 150635), (141, 147430), (230, 90381), (235, 88458), (282, 73715), (345, 60254), (470, 44229), (641, 32430), (690, 30127), (705, 29486), (1081, 19230), (1282, 16215), (1410, 14743), (1923, 10810), (2162, 9615), (3205, 6486), (3243, 6410), (3846, 5405)]