205777720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{853}}^1$

素因数の和:1064

約数の個数: 64

約数和(自身を含む): 478991520

約数和(自身を除く): 273213800

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 163, 185, 296, 326, 370, 652, 740, 815, 853, 1304, 1480, 1630, 1706, 3260, 3412, 4265, 6031, 6520, 6824, 8530, 12062, 17060, 24124, 30155, 31561, 34120, 48248, 60310, 63122, 120620, 126244, 139039, 157805, 241240, 252488, 278078, 315610, 556156, 631220, 695195, 1112312, 1262440, 1390390, 2780780, 5144443, 5561560, 10288886, 20577772, 25722215, 41155544, 51444430, 102888860, 205777720]

約数ペア:

[(1, 205777720), (2, 102888860), (4, 51444430), (5, 41155544), (8, 25722215), (10, 20577772), (20, 10288886), (37, 5561560), (40, 5144443), (74, 2780780), (148, 1390390), (163, 1262440), (185, 1112312), (296, 695195), (326, 631220), (370, 556156), (652, 315610), (740, 278078), (815, 252488), (853, 241240), (1304, 157805), (1480, 139039), (1630, 126244), (1706, 120620), (3260, 63122), (3412, 60310), (4265, 48248), (6031, 34120), (6520, 31561), (6824, 30155), (8530, 24124), (12062, 17060)]