19969911

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 33388992

約数和(自身を除く): 13419081

約数列:

[1, 3, 9, 13, 23, 39, 41, 69, 117, 123, 181, 207, 299, 369, 533, 543, 897, 943, 1599, 1629, 2353, 2691, 2829, 4163, 4797, 7059, 7421, 8487, 12259, 12489, 21177, 22263, 36777, 37467, 54119, 66789, 96473, 110331, 162357, 170683, 289419, 487071, 512049, 868257, 1536147, 2218879, 6656637, 19969911]

約数ペア:

[(1, 19969911), (3, 6656637), (9, 2218879), (13, 1536147), (23, 868257), (39, 512049), (41, 487071), (69, 289419), (117, 170683), (123, 162357), (181, 110331), (207, 96473), (299, 66789), (369, 54119), (533, 37467), (543, 36777), (897, 22263), (943, 21177), (1599, 12489), (1629, 12259), (2353, 8487), (2691, 7421), (2829, 7059), (4163, 4797)]