81782960

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{673}}^1$

素因数の和:731

約数の個数: 120

約数和(自身を含む): 228663936

約数和(自身を除く): 146880976

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 196, 217, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 673, 784, 868, 980, 1085, 1240, 1346, 1519, 1736, 1960, 2170, 2480, 2692, 3038, 3365, 3472, 3920, 4340, 4711, 5384, 6076, 6730, 7595, 8680, 9422, 10768, 12152, 13460, 15190, 17360, 18844, 20863, 23555, 24304, 26920, 30380, 32977, 37688, 41726, 47110, 53840, 60760, 65954, 75376, 83452, 94220, 104315, 121520, 131908, 146041, 164885, 166904, 188440, 208630, 263816, 292082, 329770, 333808, 376880, 417260, 527632, 584164, 659540, 730205, 834520, 1022287, 1168328, 1319080, 1460410, 1669040, 2044574, 2336656, 2638160, 2920820, 4089148, 5111435, 5841640, 8178296, 10222870, 11683280, 16356592, 20445740, 40891480, 81782960]

約数ペア:

[(1, 81782960), (2, 40891480), (4, 20445740), (5, 16356592), (7, 11683280), (8, 10222870), (10, 8178296), (14, 5841640), (16, 5111435), (20, 4089148), (28, 2920820), (31, 2638160), (35, 2336656), (40, 2044574), (49, 1669040), (56, 1460410), (62, 1319080), (70, 1168328), (80, 1022287), (98, 834520), (112, 730205), (124, 659540), (140, 584164), (155, 527632), (196, 417260), (217, 376880), (245, 333808), (248, 329770), (280, 292082), (310, 263816), (392, 208630), (434, 188440), (490, 166904), (496, 164885), (560, 146041), (620, 131908), (673, 121520), (784, 104315), (868, 94220), (980, 83452), (1085, 75376), (1240, 65954), (1346, 60760), (1519, 53840), (1736, 47110), (1960, 41726), (2170, 37688), (2480, 32977), (2692, 30380), (3038, 26920), (3365, 24304), (3472, 23555), (3920, 20863), (4340, 18844), (4711, 17360), (5384, 15190), (6076, 13460), (6730, 12152), (7595, 10768), (8680, 9422)]