21819480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{521}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 65772000

約数和(自身を除く): 43952520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 349, 521, 698, 1042, 1047, 1396, 1563, 1745, 2084, 2094, 2605, 2792, 3126, 3490, 4168, 4188, 5210, 5235, 6252, 6980, 7815, 8376, 10420, 10470, 12504, 13960, 15630, 20840, 20940, 31260, 41880, 62520, 181829, 363658, 545487, 727316, 909145, 1090974, 1454632, 1818290, 2181948, 2727435, 3636580, 4363896, 5454870, 7273160, 10909740, 21819480]

約数ペア:

[(1, 21819480), (2, 10909740), (3, 7273160), (4, 5454870), (5, 4363896), (6, 3636580), (8, 2727435), (10, 2181948), (12, 1818290), (15, 1454632), (20, 1090974), (24, 909145), (30, 727316), (40, 545487), (60, 363658), (120, 181829), (349, 62520), (521, 41880), (698, 31260), (1042, 20940), (1047, 20840), (1396, 15630), (1563, 13960), (1745, 12504), (2084, 10470), (2094, 10420), (2605, 8376), (2792, 7815), (3126, 6980), (3490, 6252), (4168, 5235), (4188, 5210)]