20416275

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 40796496

約数和(自身を除く): 20380221

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 73, 75, 99, 113, 165, 219, 225, 275, 339, 365, 495, 565, 657, 803, 825, 1017, 1095, 1243, 1695, 1825, 2409, 2475, 2825, 3285, 3729, 4015, 5085, 5475, 6215, 7227, 8249, 8475, 11187, 12045, 16425, 18645, 20075, 24747, 25425, 31075, 36135, 41245, 55935, 60225, 74241, 90739, 93225, 123735, 180675, 206225, 272217, 279675, 371205, 453695, 618675, 816651, 1361085, 1856025, 2268475, 4083255, 6805425, 20416275]

約数ペア:

[(1, 20416275), (3, 6805425), (5, 4083255), (9, 2268475), (11, 1856025), (15, 1361085), (25, 816651), (33, 618675), (45, 453695), (55, 371205), (73, 279675), (75, 272217), (99, 206225), (113, 180675), (165, 123735), (219, 93225), (225, 90739), (275, 74241), (339, 60225), (365, 55935), (495, 41245), (565, 36135), (657, 31075), (803, 25425), (825, 24747), (1017, 20075), (1095, 18645), (1243, 16425), (1695, 12045), (1825, 11187), (2409, 8475), (2475, 8249), (2825, 7227), (3285, 6215), (3729, 5475), (4015, 5085)]