21990240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{15271}}^1$

素因数の和:15292

約数の個数: 72

約数和(自身を含む): 75046608

約数和(自身を除く): 53056368

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 15271, 30542, 45813, 61084, 76355, 91626, 122168, 137439, 152710, 183252, 229065, 244336, 274878, 305420, 366504, 458130, 488672, 549756, 610840, 687195, 733008, 916260, 1099512, 1221680, 1374390, 1466016, 1832520, 2199024, 2443360, 2748780, 3665040, 4398048, 5497560, 7330080, 10995120, 21990240]

約数ペア:

[(1, 21990240), (2, 10995120), (3, 7330080), (4, 5497560), (5, 4398048), (6, 3665040), (8, 2748780), (9, 2443360), (10, 2199024), (12, 1832520), (15, 1466016), (16, 1374390), (18, 1221680), (20, 1099512), (24, 916260), (30, 733008), (32, 687195), (36, 610840), (40, 549756), (45, 488672), (48, 458130), (60, 366504), (72, 305420), (80, 274878), (90, 244336), (96, 229065), (120, 183252), (144, 152710), (160, 137439), (180, 122168), (240, 91626), (288, 76355), (360, 61084), (480, 45813), (720, 30542), (1440, 15271)]