21650085

素因数分解:

$3^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 39521664

約数和(自身を除く): 17871579

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 103, 135, 173, 243, 309, 405, 515, 519, 865, 927, 1215, 1545, 1557, 2595, 2781, 4635, 4671, 7785, 8343, 13905, 14013, 17819, 23355, 25029, 41715, 42039, 53457, 70065, 89095, 125145, 160371, 210195, 267285, 481113, 801855, 1443339, 2405565, 4330017, 7216695, 21650085]

約数ペア:

[(1, 21650085), (3, 7216695), (5, 4330017), (9, 2405565), (15, 1443339), (27, 801855), (45, 481113), (81, 267285), (103, 210195), (135, 160371), (173, 125145), (243, 89095), (309, 70065), (405, 53457), (515, 42039), (519, 41715), (865, 25029), (927, 23355), (1215, 17819), (1545, 14013), (1557, 13905), (2595, 8343), (2781, 7785), (4635, 4671)]