658910780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{20101}}^1$

素因数の和:20270

約数の個数: 48

約数和(自身を含む): 1519711200

約数和(自身を除く): 860800420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 149, 220, 298, 596, 745, 1490, 1639, 2980, 3278, 6556, 8195, 16390, 20101, 32780, 40202, 80404, 100505, 201010, 221111, 402020, 442222, 884444, 1105555, 2211110, 2995049, 4422220, 5990098, 11980196, 14975245, 29950490, 32945539, 59900980, 65891078, 131782156, 164727695, 329455390, 658910780]

約数ペア:

[(1, 658910780), (2, 329455390), (4, 164727695), (5, 131782156), (10, 65891078), (11, 59900980), (20, 32945539), (22, 29950490), (44, 14975245), (55, 11980196), (110, 5990098), (149, 4422220), (220, 2995049), (298, 2211110), (596, 1105555), (745, 884444), (1490, 442222), (1639, 402020), (2980, 221111), (3278, 201010), (6556, 100505), (8195, 80404), (16390, 40202), (20101, 32780)]