15721831820

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{84047}}^1$

素因数の和:84302

約数の個数: 48

約数和(自身を含む): 33888153600

約数和(自身を除く): 18166321780

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 199, 235, 398, 470, 796, 940, 995, 1990, 3980, 9353, 18706, 37412, 46765, 84047, 93530, 168094, 187060, 336188, 420235, 840470, 1680940, 3950209, 7900418, 15800836, 16725353, 19751045, 33450706, 39502090, 66901412, 79004180, 83626765, 167253530, 334507060, 786091591, 1572183182, 3144366364, 3930457955, 7860915910, 15721831820]

約数ペア:

[(1, 15721831820), (2, 7860915910), (4, 3930457955), (5, 3144366364), (10, 1572183182), (20, 786091591), (47, 334507060), (94, 167253530), (188, 83626765), (199, 79004180), (235, 66901412), (398, 39502090), (470, 33450706), (796, 19751045), (940, 16725353), (995, 15800836), (1990, 7900418), (3980, 3950209), (9353, 1680940), (18706, 840470), (37412, 420235), (46765, 336188), (84047, 187060), (93530, 168094)]