20708465

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 7492495

約数列:

[1, 5, 17, 29, 31, 85, 145, 155, 271, 493, 527, 899, 1355, 2465, 2635, 4495, 4607, 7859, 8401, 15283, 23035, 39295, 42005, 76415, 133603, 142817, 243629, 668015, 714085, 1218145, 4141693, 20708465]

約数ペア:

[(1, 20708465), (5, 4141693), (17, 1218145), (29, 714085), (31, 668015), (85, 243629), (145, 142817), (155, 133603), (271, 76415), (493, 42005), (527, 39295), (899, 23035), (1355, 15283), (2465, 8401), (2635, 7859), (4495, 4607)]