21440295

素因数分解:

$3^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{317}}^1$

素因数の和:501

約数の個数: 40

約数和(自身を含む): 38785824

約数和(自身を除く): 17345529

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 167, 317, 405, 501, 835, 951, 1503, 1585, 2505, 2853, 4509, 4755, 7515, 8559, 13527, 14265, 22545, 25677, 42795, 52939, 67635, 128385, 158817, 264695, 476451, 794085, 1429353, 2382255, 4288059, 7146765, 21440295]

約数ペア:

[(1, 21440295), (3, 7146765), (5, 4288059), (9, 2382255), (15, 1429353), (27, 794085), (45, 476451), (81, 264695), (135, 158817), (167, 128385), (317, 67635), (405, 52939), (501, 42795), (835, 25677), (951, 22545), (1503, 14265), (1585, 13527), (2505, 8559), (2853, 7515), (4509, 4755)]