21392252

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 45696000

約数和(自身を除く): 24303748

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 79, 133, 158, 266, 316, 509, 532, 553, 1018, 1106, 1501, 2036, 2212, 3002, 3563, 6004, 7126, 9671, 10507, 14252, 19342, 21014, 38684, 40211, 42028, 67697, 80422, 135394, 160844, 270788, 281477, 562954, 764009, 1125908, 1528018, 3056036, 5348063, 10696126, 21392252]

約数ペア:

[(1, 21392252), (2, 10696126), (4, 5348063), (7, 3056036), (14, 1528018), (19, 1125908), (28, 764009), (38, 562954), (76, 281477), (79, 270788), (133, 160844), (158, 135394), (266, 80422), (316, 67697), (509, 42028), (532, 40211), (553, 38684), (1018, 21014), (1106, 19342), (1501, 14252), (2036, 10507), (2212, 9671), (3002, 7126), (3563, 6004)]