16620880

素因数分解:

$2^4\times 5^1\times {\mathrm{373}}^1\times {\mathrm{557}}^1$

素因数の和:943

約数の個数: 40

約数和(自身を含む): 38816712

約数和(自身を除く): 22195832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 373, 557, 746, 1114, 1492, 1865, 2228, 2785, 2984, 3730, 4456, 5570, 5968, 7460, 8912, 11140, 14920, 22280, 29840, 44560, 207761, 415522, 831044, 1038805, 1662088, 2077610, 3324176, 4155220, 8310440, 16620880]

約数ペア:

[(1, 16620880), (2, 8310440), (4, 4155220), (5, 3324176), (8, 2077610), (10, 1662088), (16, 1038805), (20, 831044), (40, 415522), (80, 207761), (373, 44560), (557, 29840), (746, 22280), (1114, 14920), (1492, 11140), (1865, 8912), (2228, 7460), (2785, 5968), (2984, 5570), (3730, 4456)]