211020080

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{138829}}^1$

素因数の和:138861

約数の個数: 40

約数和(自身を含む): 516447600

約数和(自身を除く): 305427520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 138829, 277658, 555316, 694145, 1110632, 1388290, 2221264, 2637751, 2776580, 5275502, 5553160, 10551004, 11106320, 13188755, 21102008, 26377510, 42204016, 52755020, 105510040, 211020080]

約数ペア:

[(1, 211020080), (2, 105510040), (4, 52755020), (5, 42204016), (8, 26377510), (10, 21102008), (16, 13188755), (19, 11106320), (20, 10551004), (38, 5553160), (40, 5275502), (76, 2776580), (80, 2637751), (95, 2221264), (152, 1388290), (190, 1110632), (304, 694145), (380, 555316), (760, 277658), (1520, 138829)]