28128240

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{5581}}^1$

素因数の和:5607

約数の個数: 120

約数和(自身を含む): 107978208

約数和(自身を除く): 79849968

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 5581, 11162, 16743, 22324, 27905, 33486, 39067, 44648, 50229, 55810, 66972, 78134, 83715, 89296, 100458, 111620, 117201, 133944, 156268, 167430, 195335, 200916, 223240, 234402, 251145, 267888, 312536, 334860, 351603, 390670, 401832, 446480, 468804, 502290, 586005, 625072, 669720, 703206, 781340, 803664, 937608, 1004580, 1172010, 1339440, 1406412, 1562680, 1758015, 1875216, 2009160, 2344020, 2812824, 3125360, 3516030, 4018320, 4688040, 5625648, 7032060, 9376080, 14064120, 28128240]

約数ペア:

[(1, 28128240), (2, 14064120), (3, 9376080), (4, 7032060), (5, 5625648), (6, 4688040), (7, 4018320), (8, 3516030), (9, 3125360), (10, 2812824), (12, 2344020), (14, 2009160), (15, 1875216), (16, 1758015), (18, 1562680), (20, 1406412), (21, 1339440), (24, 1172010), (28, 1004580), (30, 937608), (35, 803664), (36, 781340), (40, 703206), (42, 669720), (45, 625072), (48, 586005), (56, 502290), (60, 468804), (63, 446480), (70, 401832), (72, 390670), (80, 351603), (84, 334860), (90, 312536), (105, 267888), (112, 251145), (120, 234402), (126, 223240), (140, 200916), (144, 195335), (168, 167430), (180, 156268), (210, 133944), (240, 117201), (252, 111620), (280, 100458), (315, 89296), (336, 83715), (360, 78134), (420, 66972), (504, 55810), (560, 50229), (630, 44648), (720, 39067), (840, 33486), (1008, 27905), (1260, 22324), (1680, 16743), (2520, 11162), (5040, 5581)]