20368665

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2647}}^1$

素因数の和:2683

約数の個数: 40

約数和(自身を含む): 38448960

約数和(自身を除く): 18080295

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2647, 7695, 7941, 13235, 23823, 39705, 50293, 71469, 119115, 150879, 214407, 251465, 357345, 452637, 754395, 1072035, 1357911, 2263185, 4073733, 6789555, 20368665]

約数ペア:

[(1, 20368665), (3, 6789555), (5, 4073733), (9, 2263185), (15, 1357911), (19, 1072035), (27, 754395), (45, 452637), (57, 357345), (81, 251465), (95, 214407), (135, 150879), (171, 119115), (285, 71469), (405, 50293), (513, 39705), (855, 23823), (1539, 13235), (2565, 7941), (2647, 7695)]