145213880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{518621}}^1$

素因数の和:518639

約数の個数: 32

約数和(自身を含む): 373407840

約数和(自身を除く): 228193960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 518621, 1037242, 2074484, 2593105, 3630347, 4148968, 5186210, 7260694, 10372420, 14521388, 18151735, 20744840, 29042776, 36303470, 72606940, 145213880]

約数ペア:

[(1, 145213880), (2, 72606940), (4, 36303470), (5, 29042776), (7, 20744840), (8, 18151735), (10, 14521388), (14, 10372420), (20, 7260694), (28, 5186210), (35, 4148968), (40, 3630347), (56, 2593105), (70, 2074484), (140, 1037242), (280, 518621)]