19783520

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2027}}^1$

素因数の和:2103

約数の個数: 48

約数和(自身を含む): 47528208

約数和(自身を除く): 27744688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2027, 2440, 4054, 4880, 8108, 9760, 10135, 16216, 20270, 32432, 40540, 64864, 81080, 123647, 162160, 247294, 324320, 494588, 618235, 989176, 1236470, 1978352, 2472940, 3956704, 4945880, 9891760, 19783520]

約数ペア:

[(1, 19783520), (2, 9891760), (4, 4945880), (5, 3956704), (8, 2472940), (10, 1978352), (16, 1236470), (20, 989176), (32, 618235), (40, 494588), (61, 324320), (80, 247294), (122, 162160), (160, 123647), (244, 81080), (305, 64864), (488, 40540), (610, 32432), (976, 20270), (1220, 16216), (1952, 10135), (2027, 9760), (2440, 8108), (4054, 4880)]