639952

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:115

約数の個数: 40

約数和(自身を含む): 1357056

約数和(自身を除く): 717104

約数列:

[1, 2, 4, 8, 16, 23, 37, 46, 47, 74, 92, 94, 148, 184, 188, 296, 368, 376, 592, 752, 851, 1081, 1702, 1739, 2162, 3404, 3478, 4324, 6808, 6956, 8648, 13616, 13912, 17296, 27824, 39997, 79994, 159988, 319976, 639952]

約数ペア:

[(1, 639952), (2, 319976), (4, 159988), (8, 79994), (16, 39997), (23, 27824), (37, 17296), (46, 13912), (47, 13616), (74, 8648), (92, 6956), (94, 6808), (148, 4324), (184, 3478), (188, 3404), (296, 2162), (368, 1739), (376, 1702), (592, 1081), (752, 851)]