21252780

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4373}}^1$

素因数の和:4397

約数の個数: 72

約数和(自身を含む): 66869712

約数和(自身を除く): 45616932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4373, 4860, 8746, 13119, 17492, 21865, 26238, 39357, 43730, 52476, 65595, 78714, 87460, 118071, 131190, 157428, 196785, 236142, 262380, 354213, 393570, 472284, 590355, 708426, 787140, 1062639, 1180710, 1416852, 1771065, 2125278, 2361420, 3542130, 4250556, 5313195, 7084260, 10626390, 21252780]

約数ペア:

[(1, 21252780), (2, 10626390), (3, 7084260), (4, 5313195), (5, 4250556), (6, 3542130), (9, 2361420), (10, 2125278), (12, 1771065), (15, 1416852), (18, 1180710), (20, 1062639), (27, 787140), (30, 708426), (36, 590355), (45, 472284), (54, 393570), (60, 354213), (81, 262380), (90, 236142), (108, 196785), (135, 157428), (162, 131190), (180, 118071), (243, 87460), (270, 78714), (324, 65595), (405, 52476), (486, 43730), (540, 39357), (810, 26238), (972, 21865), (1215, 17492), (1620, 13119), (2430, 8746), (4373, 4860)]