20989874276

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{733}}^1\times {\mathrm{11491}}^1$

素因数の和:12324

約数の個数: 48

約数和(自身を含む): 42513045120

約数和(自身を除く): 21523170844

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 733, 1246, 1466, 2492, 2932, 5131, 10262, 11491, 20524, 22982, 45964, 65237, 80437, 130474, 160874, 260948, 321748, 456659, 913318, 1022699, 1826636, 2045398, 4090796, 7158893, 8422903, 14317786, 16845806, 28635572, 33691612, 58960321, 117920642, 235841284, 749638367, 1499276734, 2998553468, 5247468569, 10494937138, 20989874276]

約数ペア:

[(1, 20989874276), (2, 10494937138), (4, 5247468569), (7, 2998553468), (14, 1499276734), (28, 749638367), (89, 235841284), (178, 117920642), (356, 58960321), (623, 33691612), (733, 28635572), (1246, 16845806), (1466, 14317786), (2492, 8422903), (2932, 7158893), (5131, 4090796), (10262, 2045398), (11491, 1826636), (20524, 1022699), (22982, 913318), (45964, 456659), (65237, 321748), (80437, 260948), (130474, 160874)]