638209280

素因数分解:

$2^8\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12161}}^1$

素因数の和:12223

約数の個数: 72

約数和(自身を含む): 1566125064

約数和(自身を除く): 927915784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 256, 320, 328, 410, 640, 656, 820, 1280, 1312, 1640, 2624, 3280, 5248, 6560, 10496, 12161, 13120, 24322, 26240, 48644, 52480, 60805, 97288, 121610, 194576, 243220, 389152, 486440, 498601, 778304, 972880, 997202, 1556608, 1945760, 1994404, 2493005, 3113216, 3891520, 3988808, 4986010, 7783040, 7977616, 9972020, 15566080, 15955232, 19944040, 31910464, 39888080, 63820928, 79776160, 127641856, 159552320, 319104640, 638209280]

約数ペア:

[(1, 638209280), (2, 319104640), (4, 159552320), (5, 127641856), (8, 79776160), (10, 63820928), (16, 39888080), (20, 31910464), (32, 19944040), (40, 15955232), (41, 15566080), (64, 9972020), (80, 7977616), (82, 7783040), (128, 4986010), (160, 3988808), (164, 3891520), (205, 3113216), (256, 2493005), (320, 1994404), (328, 1945760), (410, 1556608), (640, 997202), (656, 972880), (820, 778304), (1280, 498601), (1312, 486440), (1640, 389152), (2624, 243220), (3280, 194576), (5248, 121610), (6560, 97288), (10496, 60805), (12161, 52480), (13120, 48644), (24322, 26240)]