638762415

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1\times {\mathrm{1399}}^1$

素因数の和:1967

約数の個数: 32

約数和(自身を含む): 1041600000

約数和(自身を除く): 402837585

約数列:

[1, 3, 5, 15, 61, 183, 305, 499, 915, 1399, 1497, 2495, 4197, 6995, 7485, 20985, 30439, 85339, 91317, 152195, 256017, 426695, 456585, 698101, 1280085, 2094303, 3490505, 10471515, 42584161, 127752483, 212920805, 638762415]

約数ペア:

[(1, 638762415), (3, 212920805), (5, 127752483), (15, 42584161), (61, 10471515), (183, 3490505), (305, 2094303), (499, 1280085), (915, 698101), (1399, 456585), (1497, 426695), (2495, 256017), (4197, 152195), (6995, 91317), (7485, 85339), (20985, 30439)]