21129704

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{373}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 40683720

約数和(自身を除く): 19554016

約数列:

[1, 2, 4, 8, 73, 97, 146, 194, 292, 373, 388, 584, 746, 776, 1492, 2984, 7081, 14162, 27229, 28324, 36181, 54458, 56648, 72362, 108916, 144724, 217832, 289448, 2641213, 5282426, 10564852, 21129704]

約数ペア:

[(1, 21129704), (2, 10564852), (4, 5282426), (8, 2641213), (73, 289448), (97, 217832), (146, 144724), (194, 108916), (292, 72362), (373, 56648), (388, 54458), (584, 36181), (746, 28324), (776, 27229), (1492, 14162), (2984, 7081)]