20805741

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1229}}^1$

素因数の和:1271

約数の個数: 40

約数和(自身を含む): 35719200

約数和(自身を除く): 14913459

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 81, 99, 171, 209, 297, 513, 627, 891, 1229, 1539, 1881, 3687, 5643, 11061, 13519, 16929, 23351, 33183, 40557, 70053, 99549, 121671, 210159, 256861, 365013, 630477, 770583, 1095039, 1891431, 2311749, 6935247, 20805741]

約数ペア:

[(1, 20805741), (3, 6935247), (9, 2311749), (11, 1891431), (19, 1095039), (27, 770583), (33, 630477), (57, 365013), (81, 256861), (99, 210159), (171, 121671), (209, 99549), (297, 70053), (513, 40557), (627, 33183), (891, 23351), (1229, 16929), (1539, 13519), (1881, 11061), (3687, 5643)]