21383595

素因数分解:

$3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1427}}^1$

素因数の和:1481

約数の個数: 40

約数和(自身を含む): 39395664

約数和(自身を除く): 18012069

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 81, 111, 135, 185, 333, 405, 555, 999, 1427, 1665, 2997, 4281, 4995, 7135, 12843, 14985, 21405, 38529, 52799, 64215, 115587, 158397, 192645, 263995, 475191, 577935, 791985, 1425573, 2375955, 4276719, 7127865, 21383595]

約数ペア:

[(1, 21383595), (3, 7127865), (5, 4276719), (9, 2375955), (15, 1425573), (27, 791985), (37, 577935), (45, 475191), (81, 263995), (111, 192645), (135, 158397), (185, 115587), (333, 64215), (405, 52799), (555, 38529), (999, 21405), (1427, 14985), (1665, 12843), (2997, 7135), (4281, 4995)]