66780140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{821}}^1$

素因数の和:927

約数の個数: 72

約数和(自身を含む): 165300912

約数和(自身を除く): 98520772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 83, 98, 140, 166, 196, 245, 332, 415, 490, 581, 821, 830, 980, 1162, 1642, 1660, 2324, 2905, 3284, 4067, 4105, 5747, 5810, 8134, 8210, 11494, 11620, 16268, 16420, 20335, 22988, 28735, 40229, 40670, 57470, 68143, 80458, 81340, 114940, 136286, 160916, 201145, 272572, 340715, 402290, 477001, 681430, 804580, 954002, 1362860, 1908004, 2385005, 3339007, 4770010, 6678014, 9540020, 13356028, 16695035, 33390070, 66780140]

約数ペア:

[(1, 66780140), (2, 33390070), (4, 16695035), (5, 13356028), (7, 9540020), (10, 6678014), (14, 4770010), (20, 3339007), (28, 2385005), (35, 1908004), (49, 1362860), (70, 954002), (83, 804580), (98, 681430), (140, 477001), (166, 402290), (196, 340715), (245, 272572), (332, 201145), (415, 160916), (490, 136286), (581, 114940), (821, 81340), (830, 80458), (980, 68143), (1162, 57470), (1642, 40670), (1660, 40229), (2324, 28735), (2905, 22988), (3284, 20335), (4067, 16420), (4105, 16268), (5747, 11620), (5810, 11494), (8134, 8210)]