20985462

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{1427}}^1$

素因数の和:1497

約数の個数: 48

約数和(自身を含む): 49008960

約数和(自身を除く): 28023498

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 43, 57, 86, 114, 129, 171, 258, 342, 387, 774, 817, 1427, 1634, 2451, 2854, 4281, 4902, 7353, 8562, 12843, 14706, 25686, 27113, 54226, 61361, 81339, 122722, 162678, 184083, 244017, 368166, 488034, 552249, 1104498, 1165859, 2331718, 3497577, 6995154, 10492731, 20985462]

約数ペア:

[(1, 20985462), (2, 10492731), (3, 6995154), (6, 3497577), (9, 2331718), (18, 1165859), (19, 1104498), (38, 552249), (43, 488034), (57, 368166), (86, 244017), (114, 184083), (129, 162678), (171, 122722), (258, 81339), (342, 61361), (387, 54226), (774, 27113), (817, 25686), (1427, 14706), (1634, 12843), (2451, 8562), (2854, 7353), (4281, 4902)]