221457560

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{14843}}^1$

素因数の和:15227

約数の個数: 32

約数和(自身を含む): 499649040

約数和(自身を除く): 278191480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1492, 1865, 2984, 3730, 7460, 14843, 14920, 29686, 59372, 74215, 118744, 148430, 296860, 593720, 5536439, 11072878, 22145756, 27682195, 44291512, 55364390, 110728780, 221457560]

約数ペア:

[(1, 221457560), (2, 110728780), (4, 55364390), (5, 44291512), (8, 27682195), (10, 22145756), (20, 11072878), (40, 5536439), (373, 593720), (746, 296860), (1492, 148430), (1865, 118744), (2984, 74215), (3730, 59372), (7460, 29686), (14843, 14920)]