156979025

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:990

約数の個数: 48

約数和(自身を含む): 237794304

約数和(自身を除く): 80815279

約数列:

[1, 5, 7, 23, 25, 35, 43, 115, 161, 175, 215, 301, 575, 805, 907, 989, 1075, 1505, 4025, 4535, 4945, 6349, 6923, 7525, 20861, 22675, 24725, 31745, 34615, 39001, 104305, 146027, 158725, 173075, 195005, 273007, 521525, 730135, 897023, 975025, 1365035, 3650675, 4485115, 6279161, 6825175, 22425575, 31395805, 156979025]

約数ペア:

[(1, 156979025), (5, 31395805), (7, 22425575), (23, 6825175), (25, 6279161), (35, 4485115), (43, 3650675), (115, 1365035), (161, 975025), (175, 897023), (215, 730135), (301, 521525), (575, 273007), (805, 195005), (907, 173075), (989, 158725), (1075, 146027), (1505, 104305), (4025, 39001), (4535, 34615), (4945, 31745), (6349, 24725), (6923, 22675), (7525, 20861)]