21008190

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1409}}^1$

素因数の和:1497

約数の個数: 64

約数和(自身を含む): 58475520

約数和(自身を除く): 37467330

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1409, 1491, 2130, 2485, 2818, 2982, 4227, 4970, 7045, 7455, 8454, 9863, 14090, 14910, 19726, 21135, 29589, 42270, 49315, 59178, 98630, 100039, 147945, 200078, 295890, 300117, 500195, 600234, 700273, 1000390, 1400546, 1500585, 2100819, 3001170, 3501365, 4201638, 7002730, 10504095, 21008190]

約数ペア:

[(1, 21008190), (2, 10504095), (3, 7002730), (5, 4201638), (6, 3501365), (7, 3001170), (10, 2100819), (14, 1500585), (15, 1400546), (21, 1000390), (30, 700273), (35, 600234), (42, 500195), (70, 300117), (71, 295890), (105, 200078), (142, 147945), (210, 100039), (213, 98630), (355, 59178), (426, 49315), (497, 42270), (710, 29589), (994, 21135), (1065, 19726), (1409, 14910), (1491, 14090), (2130, 9863), (2485, 8454), (2818, 7455), (2982, 7045), (4227, 4970)]