201936640

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1997}}^1$

素因数の和:2097

約数の個数: 72

約数和(自身を含む): 490069440

約数和(自身を除く): 288132800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 632, 640, 790, 1264, 1280, 1580, 1997, 2528, 3160, 3994, 5056, 6320, 7988, 9985, 10112, 12640, 15976, 19970, 20224, 25280, 31952, 39940, 50560, 63904, 79880, 101120, 127808, 157763, 159760, 255616, 315526, 319520, 511232, 631052, 639040, 788815, 1262104, 1278080, 1577630, 2524208, 2556160, 3155260, 5048416, 6310520, 10096832, 12621040, 20193664, 25242080, 40387328, 50484160, 100968320, 201936640]

約数ペア:

[(1, 201936640), (2, 100968320), (4, 50484160), (5, 40387328), (8, 25242080), (10, 20193664), (16, 12621040), (20, 10096832), (32, 6310520), (40, 5048416), (64, 3155260), (79, 2556160), (80, 2524208), (128, 1577630), (158, 1278080), (160, 1262104), (256, 788815), (316, 639040), (320, 631052), (395, 511232), (632, 319520), (640, 315526), (790, 255616), (1264, 159760), (1280, 157763), (1580, 127808), (1997, 101120), (2528, 79880), (3160, 63904), (3994, 50560), (5056, 39940), (6320, 31952), (7988, 25280), (9985, 20224), (10112, 19970), (12640, 15976)]