19978764

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1543}}^1$

素因数の和:1646

約数の個数: 48

約数和(自身を含む): 50840832

約数和(自身を除く): 30862068

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 83, 156, 166, 249, 332, 498, 996, 1079, 1543, 2158, 3086, 3237, 4316, 4629, 6172, 6474, 9258, 12948, 18516, 20059, 40118, 60177, 80236, 120354, 128069, 240708, 256138, 384207, 512276, 768414, 1536828, 1664897, 3329794, 4994691, 6659588, 9989382, 19978764]

約数ペア:

[(1, 19978764), (2, 9989382), (3, 6659588), (4, 4994691), (6, 3329794), (12, 1664897), (13, 1536828), (26, 768414), (39, 512276), (52, 384207), (78, 256138), (83, 240708), (156, 128069), (166, 120354), (249, 80236), (332, 60177), (498, 40118), (996, 20059), (1079, 18516), (1543, 12948), (2158, 9258), (3086, 6474), (3237, 6172), (4316, 4629)]