21996100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{67}}^2$

素因数の和:162

約数の個数: 81

約数和(自身を含む): 56365533

約数和(自身を除く): 34369433

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 67, 70, 98, 100, 134, 140, 175, 196, 245, 268, 335, 350, 469, 490, 670, 700, 938, 980, 1225, 1340, 1675, 1876, 2345, 2450, 3283, 3350, 4489, 4690, 4900, 6566, 6700, 8978, 9380, 11725, 13132, 16415, 17956, 22445, 23450, 31423, 32830, 44890, 46900, 62846, 65660, 82075, 89780, 112225, 125692, 157115, 164150, 219961, 224450, 314230, 328300, 439922, 448900, 628460, 785575, 879844, 1099805, 1571150, 2199610, 3142300, 4399220, 5499025, 10998050, 21996100]

約数ペア:

[(1, 21996100), (2, 10998050), (4, 5499025), (5, 4399220), (7, 3142300), (10, 2199610), (14, 1571150), (20, 1099805), (25, 879844), (28, 785575), (35, 628460), (49, 448900), (50, 439922), (67, 328300), (70, 314230), (98, 224450), (100, 219961), (134, 164150), (140, 157115), (175, 125692), (196, 112225), (245, 89780), (268, 82075), (335, 65660), (350, 62846), (469, 46900), (490, 44890), (670, 32830), (700, 31423), (938, 23450), (980, 22445), (1225, 17956), (1340, 16415), (1675, 13132), (1876, 11725), (2345, 9380), (2450, 8978), (3283, 6700), (3350, 6566), (4489, 4900)]