38400720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^2$

素因数の和:181

約数の個数: 120

約数和(自身を含む): 123840288

約数和(自身を除く): 85439568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 61, 80, 86, 120, 122, 129, 172, 183, 215, 240, 244, 258, 305, 344, 366, 430, 488, 516, 610, 645, 688, 732, 860, 915, 976, 1032, 1220, 1290, 1464, 1720, 1830, 2064, 2440, 2580, 2623, 2928, 3440, 3660, 3721, 4880, 5160, 5246, 7320, 7442, 7869, 10320, 10492, 11163, 13115, 14640, 14884, 15738, 18605, 20984, 22326, 26230, 29768, 31476, 37210, 39345, 41968, 44652, 52460, 55815, 59536, 62952, 74420, 78690, 89304, 104920, 111630, 125904, 148840, 157380, 160003, 178608, 209840, 223260, 297680, 314760, 320006, 446520, 480009, 629520, 640012, 800015, 893040, 960018, 1280024, 1600030, 1920036, 2400045, 2560048, 3200060, 3840072, 4800090, 6400120, 7680144, 9600180, 12800240, 19200360, 38400720]

約数ペア:

[(1, 38400720), (2, 19200360), (3, 12800240), (4, 9600180), (5, 7680144), (6, 6400120), (8, 4800090), (10, 3840072), (12, 3200060), (15, 2560048), (16, 2400045), (20, 1920036), (24, 1600030), (30, 1280024), (40, 960018), (43, 893040), (48, 800015), (60, 640012), (61, 629520), (80, 480009), (86, 446520), (120, 320006), (122, 314760), (129, 297680), (172, 223260), (183, 209840), (215, 178608), (240, 160003), (244, 157380), (258, 148840), (305, 125904), (344, 111630), (366, 104920), (430, 89304), (488, 78690), (516, 74420), (610, 62952), (645, 59536), (688, 55815), (732, 52460), (860, 44652), (915, 41968), (976, 39345), (1032, 37210), (1220, 31476), (1290, 29768), (1464, 26230), (1720, 22326), (1830, 20984), (2064, 18605), (2440, 15738), (2580, 14884), (2623, 14640), (2928, 13115), (3440, 11163), (3660, 10492), (3721, 10320), (4880, 7869), (5160, 7442), (5246, 7320)]