21389169825

素因数分解:

$3^6\times 5^2\times {\mathrm{1173617}}^1$

素因数の和:1173645

約数の個数: 42

約数和(自身を含む): 39765698694

約数和(自身を除く): 18376528869

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 405, 675, 729, 1215, 2025, 3645, 6075, 18225, 1173617, 3520851, 5868085, 10562553, 17604255, 29340425, 31687659, 52812765, 88021275, 95062977, 158438295, 264063825, 285188931, 475314885, 792191475, 855566793, 1425944655, 2376574425, 4277833965, 7129723275, 21389169825]

約数ペア:

[(1, 21389169825), (3, 7129723275), (5, 4277833965), (9, 2376574425), (15, 1425944655), (25, 855566793), (27, 792191475), (45, 475314885), (75, 285188931), (81, 264063825), (135, 158438295), (225, 95062977), (243, 88021275), (405, 52812765), (675, 31687659), (729, 29340425), (1215, 17604255), (2025, 10562553), (3645, 5868085), (6075, 3520851), (18225, 1173617)]