205255575

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{19}}^4$

素因数の和:99

約数の個数: 90

約数和(自身を含む): 443496664

約数和(自身を除く): 238241089

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 45, 57, 63, 75, 95, 105, 133, 171, 175, 225, 285, 315, 361, 399, 475, 525, 665, 855, 1083, 1197, 1425, 1575, 1805, 1995, 2527, 3249, 3325, 4275, 5415, 5985, 6859, 7581, 9025, 9975, 12635, 16245, 20577, 22743, 27075, 29925, 34295, 37905, 48013, 61731, 63175, 81225, 102885, 113715, 130321, 144039, 171475, 189525, 240065, 308655, 390963, 432117, 514425, 568575, 651605, 720195, 912247, 1172889, 1200325, 1543275, 1954815, 2160585, 2736741, 3258025, 3600975, 4561235, 5864445, 8210223, 9774075, 10802925, 13683705, 22806175, 29322225, 41051115, 68418525, 205255575]

約数ペア:

[(1, 205255575), (3, 68418525), (5, 41051115), (7, 29322225), (9, 22806175), (15, 13683705), (19, 10802925), (21, 9774075), (25, 8210223), (35, 5864445), (45, 4561235), (57, 3600975), (63, 3258025), (75, 2736741), (95, 2160585), (105, 1954815), (133, 1543275), (171, 1200325), (175, 1172889), (225, 912247), (285, 720195), (315, 651605), (361, 568575), (399, 514425), (475, 432117), (525, 390963), (665, 308655), (855, 240065), (1083, 189525), (1197, 171475), (1425, 144039), (1575, 130321), (1805, 113715), (1995, 102885), (2527, 81225), (3249, 63175), (3325, 61731), (4275, 48013), (5415, 37905), (5985, 34295), (6859, 29925), (7581, 27075), (9025, 22743), (9975, 20577), (12635, 16245)]