18978076

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 37719808

約数和(自身を除く): 18741732

約数列:

[1, 2, 4, 13, 26, 31, 52, 61, 62, 122, 124, 193, 244, 386, 403, 772, 793, 806, 1586, 1612, 1891, 2509, 3172, 3782, 5018, 5983, 7564, 10036, 11773, 11966, 23546, 23932, 24583, 47092, 49166, 77779, 98332, 153049, 155558, 306098, 311116, 364963, 612196, 729926, 1459852, 4744519, 9489038, 18978076]

約数ペア:

[(1, 18978076), (2, 9489038), (4, 4744519), (13, 1459852), (26, 729926), (31, 612196), (52, 364963), (61, 311116), (62, 306098), (122, 155558), (124, 153049), (193, 98332), (244, 77779), (386, 49166), (403, 47092), (772, 24583), (793, 23932), (806, 23546), (1586, 11966), (1612, 11773), (1891, 10036), (2509, 7564), (3172, 5983), (3782, 5018)]