20551545

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1231}}^1$

素因数の和:1302

約数の個数: 48

約数和(自身を含む): 41513472

約数和(自身を除く): 20961927

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 53, 63, 105, 159, 265, 315, 371, 477, 795, 1113, 1231, 1855, 2385, 3339, 3693, 5565, 6155, 8617, 11079, 16695, 18465, 25851, 43085, 55395, 65243, 77553, 129255, 195729, 326215, 387765, 456701, 587187, 978645, 1370103, 2283505, 2935935, 4110309, 6850515, 20551545]

約数ペア:

[(1, 20551545), (3, 6850515), (5, 4110309), (7, 2935935), (9, 2283505), (15, 1370103), (21, 978645), (35, 587187), (45, 456701), (53, 387765), (63, 326215), (105, 195729), (159, 129255), (265, 77553), (315, 65243), (371, 55395), (477, 43085), (795, 25851), (1113, 18465), (1231, 16695), (1855, 11079), (2385, 8617), (3339, 6155), (3693, 5565)]