21326925

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 38301120

約数和(自身を除く): 16974195

約数列:

[1, 3, 5, 15, 17, 25, 43, 51, 75, 85, 129, 215, 255, 389, 425, 645, 731, 1075, 1167, 1275, 1945, 2193, 3225, 3655, 5835, 6613, 9725, 10965, 16727, 18275, 19839, 29175, 33065, 50181, 54825, 83635, 99195, 165325, 250905, 284359, 418175, 495975, 853077, 1254525, 1421795, 4265385, 7108975, 21326925]

約数ペア:

[(1, 21326925), (3, 7108975), (5, 4265385), (15, 1421795), (17, 1254525), (25, 853077), (43, 495975), (51, 418175), (75, 284359), (85, 250905), (129, 165325), (215, 99195), (255, 83635), (389, 54825), (425, 50181), (645, 33065), (731, 29175), (1075, 19839), (1167, 18275), (1275, 16727), (1945, 10965), (2193, 9725), (3225, 6613), (3655, 5835)]