20510640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1$

素因数の和:547

約数の個数: 120

約数和(自身を含む): 70160688

約数和(自身を除く): 49650048

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 467, 488, 549, 610, 720, 732, 915, 934, 976, 1098, 1220, 1401, 1464, 1830, 1868, 2196, 2335, 2440, 2745, 2802, 2928, 3660, 3736, 4203, 4392, 4670, 4880, 5490, 5604, 7005, 7320, 7472, 8406, 8784, 9340, 10980, 11208, 14010, 14640, 16812, 18680, 21015, 21960, 22416, 28020, 28487, 33624, 37360, 42030, 43920, 56040, 56974, 67248, 84060, 85461, 112080, 113948, 142435, 168120, 170922, 227896, 256383, 284870, 336240, 341844, 427305, 455792, 512766, 569740, 683688, 854610, 1025532, 1139480, 1281915, 1367376, 1709220, 2051064, 2278960, 2563830, 3418440, 4102128, 5127660, 6836880, 10255320, 20510640]

約数ペア:

[(1, 20510640), (2, 10255320), (3, 6836880), (4, 5127660), (5, 4102128), (6, 3418440), (8, 2563830), (9, 2278960), (10, 2051064), (12, 1709220), (15, 1367376), (16, 1281915), (18, 1139480), (20, 1025532), (24, 854610), (30, 683688), (36, 569740), (40, 512766), (45, 455792), (48, 427305), (60, 341844), (61, 336240), (72, 284870), (80, 256383), (90, 227896), (120, 170922), (122, 168120), (144, 142435), (180, 113948), (183, 112080), (240, 85461), (244, 84060), (305, 67248), (360, 56974), (366, 56040), (467, 43920), (488, 42030), (549, 37360), (610, 33624), (720, 28487), (732, 28020), (915, 22416), (934, 21960), (976, 21015), (1098, 18680), (1220, 16812), (1401, 14640), (1464, 14010), (1830, 11208), (1868, 10980), (2196, 9340), (2335, 8784), (2440, 8406), (2745, 7472), (2802, 7320), (2928, 7005), (3660, 5604), (3736, 5490), (4203, 4880), (4392, 4670)]