20449440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1291}}^1$

素因数の和:1323

約数の個数: 144

約数和(自身を含む): 76186656

約数和(自身を除く): 55737216

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 288, 330, 352, 360, 396, 440, 480, 495, 528, 660, 720, 792, 880, 990, 1056, 1291, 1320, 1440, 1584, 1760, 1980, 2582, 2640, 3168, 3873, 3960, 5164, 5280, 6455, 7746, 7920, 10328, 11619, 12910, 14201, 15492, 15840, 19365, 20656, 23238, 25820, 28402, 30984, 38730, 41312, 42603, 46476, 51640, 56804, 58095, 61968, 71005, 77460, 85206, 92952, 103280, 113608, 116190, 123936, 127809, 142010, 154920, 170412, 185904, 206560, 213015, 227216, 232380, 255618, 284020, 309840, 340824, 371808, 426030, 454432, 464760, 511236, 568040, 619680, 639045, 681648, 852060, 929520, 1022472, 1136080, 1278090, 1363296, 1704120, 1859040, 2044944, 2272160, 2556180, 3408240, 4089888, 5112360, 6816480, 10224720, 20449440]

約数ペア:

[(1, 20449440), (2, 10224720), (3, 6816480), (4, 5112360), (5, 4089888), (6, 3408240), (8, 2556180), (9, 2272160), (10, 2044944), (11, 1859040), (12, 1704120), (15, 1363296), (16, 1278090), (18, 1136080), (20, 1022472), (22, 929520), (24, 852060), (30, 681648), (32, 639045), (33, 619680), (36, 568040), (40, 511236), (44, 464760), (45, 454432), (48, 426030), (55, 371808), (60, 340824), (66, 309840), (72, 284020), (80, 255618), (88, 232380), (90, 227216), (96, 213015), (99, 206560), (110, 185904), (120, 170412), (132, 154920), (144, 142010), (160, 127809), (165, 123936), (176, 116190), (180, 113608), (198, 103280), (220, 92952), (240, 85206), (264, 77460), (288, 71005), (330, 61968), (352, 58095), (360, 56804), (396, 51640), (440, 46476), (480, 42603), (495, 41312), (528, 38730), (660, 30984), (720, 28402), (792, 25820), (880, 23238), (990, 20656), (1056, 19365), (1291, 15840), (1320, 15492), (1440, 14201), (1584, 12910), (1760, 11619), (1980, 10328), (2582, 7920), (2640, 7746), (3168, 6455), (3873, 5280), (3960, 5164)]