80990640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{571}}^1$

素因数の和:787

約数の個数: 120

約数和(自身を含む): 273853008

約数和(自身を除く): 192862368

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 197, 240, 360, 394, 571, 591, 720, 788, 985, 1142, 1182, 1576, 1713, 1773, 1970, 2284, 2364, 2855, 2955, 3152, 3426, 3546, 3940, 4568, 4728, 5139, 5710, 5910, 6852, 7092, 7880, 8565, 8865, 9136, 9456, 10278, 11420, 11820, 13704, 14184, 15760, 17130, 17730, 20556, 22840, 23640, 25695, 27408, 28368, 34260, 35460, 41112, 45680, 47280, 51390, 68520, 70920, 82224, 102780, 112487, 137040, 141840, 205560, 224974, 337461, 411120, 449948, 562435, 674922, 899896, 1012383, 1124870, 1349844, 1687305, 1799792, 2024766, 2249740, 2699688, 3374610, 4049532, 4499480, 5061915, 5399376, 6749220, 8099064, 8998960, 10123830, 13498440, 16198128, 20247660, 26996880, 40495320, 80990640]

約数ペア:

[(1, 80990640), (2, 40495320), (3, 26996880), (4, 20247660), (5, 16198128), (6, 13498440), (8, 10123830), (9, 8998960), (10, 8099064), (12, 6749220), (15, 5399376), (16, 5061915), (18, 4499480), (20, 4049532), (24, 3374610), (30, 2699688), (36, 2249740), (40, 2024766), (45, 1799792), (48, 1687305), (60, 1349844), (72, 1124870), (80, 1012383), (90, 899896), (120, 674922), (144, 562435), (180, 449948), (197, 411120), (240, 337461), (360, 224974), (394, 205560), (571, 141840), (591, 137040), (720, 112487), (788, 102780), (985, 82224), (1142, 70920), (1182, 68520), (1576, 51390), (1713, 47280), (1773, 45680), (1970, 41112), (2284, 35460), (2364, 34260), (2855, 28368), (2955, 27408), (3152, 25695), (3426, 23640), (3546, 22840), (3940, 20556), (4568, 17730), (4728, 17130), (5139, 15760), (5710, 14184), (5910, 13704), (6852, 11820), (7092, 11420), (7880, 10278), (8565, 9456), (8865, 9136)]