19651380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:749

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 44215500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 71, 84, 105, 140, 142, 210, 213, 284, 355, 420, 426, 497, 659, 710, 852, 994, 1065, 1318, 1420, 1491, 1977, 1988, 2130, 2485, 2636, 2982, 3295, 3954, 4260, 4613, 4970, 5964, 6590, 7455, 7908, 9226, 9885, 9940, 13180, 13839, 14910, 18452, 19770, 23065, 27678, 29820, 39540, 46130, 46789, 55356, 69195, 92260, 93578, 138390, 140367, 187156, 233945, 276780, 280734, 327523, 467890, 561468, 655046, 701835, 935780, 982569, 1310092, 1403670, 1637615, 1965138, 2807340, 3275230, 3930276, 4912845, 6550460, 9825690, 19651380]

約数ペア:

[(1, 19651380), (2, 9825690), (3, 6550460), (4, 4912845), (5, 3930276), (6, 3275230), (7, 2807340), (10, 1965138), (12, 1637615), (14, 1403670), (15, 1310092), (20, 982569), (21, 935780), (28, 701835), (30, 655046), (35, 561468), (42, 467890), (60, 327523), (70, 280734), (71, 276780), (84, 233945), (105, 187156), (140, 140367), (142, 138390), (210, 93578), (213, 92260), (284, 69195), (355, 55356), (420, 46789), (426, 46130), (497, 39540), (659, 29820), (710, 27678), (852, 23065), (994, 19770), (1065, 18452), (1318, 14910), (1420, 13839), (1491, 13180), (1977, 9940), (1988, 9885), (2130, 9226), (2485, 7908), (2636, 7455), (2982, 6590), (3295, 5964), (3954, 4970), (4260, 4613)]