1877891665

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{197}}^1\times {\mathrm{389}}^1$

素因数の和:646

約数の個数: 48

約数和(自身を含む): 2543626800

約数和(自身を除く): 665735135

約数列:

[1, 5, 13, 29, 65, 145, 169, 197, 377, 389, 845, 985, 1885, 1945, 2561, 4901, 5057, 5713, 11281, 12805, 24505, 25285, 28565, 33293, 56405, 65741, 74269, 76633, 146653, 166465, 328705, 371345, 383165, 733265, 965497, 996229, 1906489, 2222357, 4827485, 4981145, 9532445, 11111785, 12950977, 28890641, 64754885, 144453205, 375578333, 1877891665]

約数ペア:

[(1, 1877891665), (5, 375578333), (13, 144453205), (29, 64754885), (65, 28890641), (145, 12950977), (169, 11111785), (197, 9532445), (377, 4981145), (389, 4827485), (845, 2222357), (985, 1906489), (1885, 996229), (1945, 965497), (2561, 733265), (4901, 383165), (5057, 371345), (5713, 328705), (11281, 166465), (12805, 146653), (24505, 76633), (25285, 74269), (28565, 65741), (33293, 56405)]