39999760

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21739}}^1$

素因数の和:21775

約数の個数: 40

約数和(自身を含む): 97047360

約数和(自身を除く): 57047600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 21739, 43478, 86956, 108695, 173912, 217390, 347824, 434780, 499997, 869560, 999994, 1739120, 1999988, 2499985, 3999976, 4999970, 7999952, 9999940, 19999880, 39999760]

約数ペア:

[(1, 39999760), (2, 19999880), (4, 9999940), (5, 7999952), (8, 4999970), (10, 3999976), (16, 2499985), (20, 1999988), (23, 1739120), (40, 999994), (46, 869560), (80, 499997), (92, 434780), (115, 347824), (184, 217390), (230, 173912), (368, 108695), (460, 86956), (920, 43478), (1840, 21739)]