20733880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30491}}^1$

素因数の和:30519

約数の個数: 32

約数和(自身を含む): 49397040

約数和(自身を除く): 28663160

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30491, 60982, 121964, 152455, 243928, 304910, 518347, 609820, 1036694, 1219640, 2073388, 2591735, 4146776, 5183470, 10366940, 20733880]

約数ペア:

[(1, 20733880), (2, 10366940), (4, 5183470), (5, 4146776), (8, 2591735), (10, 2073388), (17, 1219640), (20, 1036694), (34, 609820), (40, 518347), (68, 304910), (85, 243928), (136, 152455), (170, 121964), (340, 60982), (680, 30491)]