20247660

素因数分解:

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

素因数の和:783

約数の個数: 72

約数和(自身を含む): 61837776

約数和(自身を除く): 41590116

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 571, 591, 788, 985, 1142, 1182, 1713, 1773, 1970, 2284, 2364, 2855, 2955, 3426, 3546, 3940, 5139, 5710, 5910, 6852, 7092, 8565, 8865, 10278, 11420, 11820, 17130, 17730, 20556, 25695, 34260, 35460, 51390, 102780, 112487, 224974, 337461, 449948, 562435, 674922, 1012383, 1124870, 1349844, 1687305, 2024766, 2249740, 3374610, 4049532, 5061915, 6749220, 10123830, 20247660]

約数ペア:

[(1, 20247660), (2, 10123830), (3, 6749220), (4, 5061915), (5, 4049532), (6, 3374610), (9, 2249740), (10, 2024766), (12, 1687305), (15, 1349844), (18, 1124870), (20, 1012383), (30, 674922), (36, 562435), (45, 449948), (60, 337461), (90, 224974), (180, 112487), (197, 102780), (394, 51390), (571, 35460), (591, 34260), (788, 25695), (985, 20556), (1142, 17730), (1182, 17130), (1713, 11820), (1773, 11420), (1970, 10278), (2284, 8865), (2364, 8565), (2855, 7092), (2955, 6852), (3426, 5910), (3546, 5710), (3940, 5139)]