20643236

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 40715136

約数和(自身を除く): 20071900

約数列:

[1, 2, 4, 17, 23, 34, 46, 67, 68, 92, 134, 197, 268, 391, 394, 782, 788, 1139, 1541, 1564, 2278, 3082, 3349, 4531, 4556, 6164, 6698, 9062, 13199, 13396, 18124, 26197, 26398, 52394, 52796, 77027, 104788, 154054, 224383, 303577, 308108, 448766, 607154, 897532, 1214308, 5160809, 10321618, 20643236]

約数ペア:

[(1, 20643236), (2, 10321618), (4, 5160809), (17, 1214308), (23, 897532), (34, 607154), (46, 448766), (67, 308108), (68, 303577), (92, 224383), (134, 154054), (197, 104788), (268, 77027), (391, 52796), (394, 52394), (782, 26398), (788, 26197), (1139, 18124), (1541, 13396), (1564, 13199), (2278, 9062), (3082, 6698), (3349, 6164), (4531, 4556)]