19907433

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 35875840

約数和(自身を除く): 15968407

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 109, 117, 223, 273, 327, 669, 763, 819, 981, 1417, 1561, 2007, 2289, 2899, 4251, 4683, 6867, 8697, 9919, 12753, 14049, 20293, 24307, 26091, 29757, 60879, 72921, 89271, 170149, 182637, 218763, 315991, 510447, 947973, 1531341, 2211937, 2843919, 6635811, 19907433]

約数ペア:

[(1, 19907433), (3, 6635811), (7, 2843919), (9, 2211937), (13, 1531341), (21, 947973), (39, 510447), (63, 315991), (91, 218763), (109, 182637), (117, 170149), (223, 89271), (273, 72921), (327, 60879), (669, 29757), (763, 26091), (819, 24307), (981, 20293), (1417, 14049), (1561, 12753), (2007, 9919), (2289, 8697), (2899, 6867), (4251, 4683)]