20003560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1279}}^1$

素因数の和:1330

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29762840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1279, 1564, 1955, 2558, 3128, 3910, 5116, 6395, 7820, 10232, 12790, 15640, 21743, 25580, 29417, 43486, 51160, 58834, 86972, 108715, 117668, 147085, 173944, 217430, 235336, 294170, 434860, 500089, 588340, 869720, 1000178, 1176680, 2000356, 2500445, 4000712, 5000890, 10001780, 20003560]

約数ペア:

[(1, 20003560), (2, 10001780), (4, 5000890), (5, 4000712), (8, 2500445), (10, 2000356), (17, 1176680), (20, 1000178), (23, 869720), (34, 588340), (40, 500089), (46, 434860), (68, 294170), (85, 235336), (92, 217430), (115, 173944), (136, 147085), (170, 117668), (184, 108715), (230, 86972), (340, 58834), (391, 51160), (460, 43486), (680, 29417), (782, 25580), (920, 21743), (1279, 15640), (1564, 12790), (1955, 10232), (2558, 7820), (3128, 6395), (3910, 5116)]