349883920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{313}}^1$

素因数の和:572

約数の個数: 80

約数和(自身を含む): 830504880

約数和(自身を除く): 480620960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 157, 178, 313, 314, 356, 445, 626, 628, 712, 785, 890, 1252, 1256, 1424, 1565, 1570, 1780, 2504, 2512, 3130, 3140, 3560, 5008, 6260, 6280, 7120, 12520, 12560, 13973, 25040, 27857, 27946, 49141, 55714, 55892, 69865, 98282, 111428, 111784, 139285, 139730, 196564, 222856, 223568, 245705, 278570, 279460, 393128, 445712, 491410, 557140, 558920, 786256, 982820, 1114280, 1117840, 1965640, 2228560, 3931280, 4373549, 8747098, 17494196, 21867745, 34988392, 43735490, 69976784, 87470980, 174941960, 349883920]

約数ペア:

[(1, 349883920), (2, 174941960), (4, 87470980), (5, 69976784), (8, 43735490), (10, 34988392), (16, 21867745), (20, 17494196), (40, 8747098), (80, 4373549), (89, 3931280), (157, 2228560), (178, 1965640), (313, 1117840), (314, 1114280), (356, 982820), (445, 786256), (626, 558920), (628, 557140), (712, 491410), (785, 445712), (890, 393128), (1252, 279460), (1256, 278570), (1424, 245705), (1565, 223568), (1570, 222856), (1780, 196564), (2504, 139730), (2512, 139285), (3130, 111784), (3140, 111428), (3560, 98282), (5008, 69865), (6260, 55892), (6280, 55714), (7120, 49141), (12520, 27946), (12560, 27857), (13973, 25040)]