19980144

素因数分解:

$2^4\times 3^2\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1662

約数の個数: 60

約数和(自身を含む): 56581200

約数和(自身を除く): 36601056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 89, 144, 178, 267, 356, 534, 712, 801, 1068, 1424, 1559, 1602, 2136, 3118, 3204, 4272, 4677, 6236, 6408, 9354, 12472, 12816, 14031, 18708, 24944, 28062, 37416, 56124, 74832, 112248, 138751, 224496, 277502, 416253, 555004, 832506, 1110008, 1248759, 1665012, 2220016, 2497518, 3330024, 4995036, 6660048, 9990072, 19980144]

約数ペア:

[(1, 19980144), (2, 9990072), (3, 6660048), (4, 4995036), (6, 3330024), (8, 2497518), (9, 2220016), (12, 1665012), (16, 1248759), (18, 1110008), (24, 832506), (36, 555004), (48, 416253), (72, 277502), (89, 224496), (144, 138751), (178, 112248), (267, 74832), (356, 56124), (534, 37416), (712, 28062), (801, 24944), (1068, 18708), (1424, 14031), (1559, 12816), (1602, 12472), (2136, 9354), (3118, 6408), (3204, 6236), (4272, 4677)]